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Window air conditioner prices for 8,000–14,999 BTU units averaged $321.43, leaving a capacity premium of about $136 over smaller units.

Iced coffee prices, including packaged cold brew, averaged $26.05 from August 18–24, down 7.3% across all 12 tracked city areas.

Dry cat food prices averaged $42.32 across 12 tracked city areas from August 14–20, up 18.2% from the previous seven days.

Annual dog retail-goods costs fell $140 across 12 tracked city areas from August 10 to 17, 2026, as dry dog food drove the entire decline.

Hamburger bun prices averaged $13.20 across four higher-price city areas and $7.81 across the other eight on August 13, 2026.

Adhesive bandage prices fell 40.0% from July 23 to August 10 across all 12 tracked city areas, returning close to their late-June benchmark.

Multivitamin prices rose 49.7% from July 30 to August 6 across all 12 tracked city areas, reversing the direction of CostInflation’s July finding.

Ibuprofen prices rose 27.8% while acetaminophen prices fell 12.5% from July 27 to August 3 across the same 12 tracked city areas.

Menstrual pad prices fell about 14% from July 23 to July 30 across 12 tracked cities, carrying 77% of a broader retail-goods basket decline.

The 12-city average for dry dog food prices rose 20.9% from June 16 to July 27, adding $118 to an annual dog retail-goods basket.

Coffee price trends diverged from June 13 to July 23: bottled drinks rose 11.2% while creamer fell 10.5% across the same 12 cities.

Lettuce prices by city put North Jackson at $11.43 on July 20, while Westside Jacksonville rose fastest across 12 cities.

8,000-11,999 BTU portable air conditioner prices averaged $198.79 on July 16, down 10.1% from June 29 across 12 cities.

SSD vs HDD price per TB comparison: NVMe averaged $200.32 while internal hard drives averaged $51.96 across 12 cities on July 13, 2026.

Supplement prices moved in different directions by July 9: magnesium rose 32.7% while multivitamins fell 14.4% across 11 cities.

Dog vs cat costs split by about $304 on July 6, with dry dog food carrying most of the recurring supply difference.

CostInflation Burger Index July 2026 put North Jackson at $6.68 and San Jose at $4.88, a $1.80 gap led mostly by buns, lettuce, and beef.

From June 15 to July 2, menstrual care product prices split: cups rose 11.6% and feminine wipes fell 9.2%, while the full basket rose 1.2%.

On June 29, air conditioner prices by type ran from a $181 small-window average to a $566 mini-split average, while the full AC city range came in near $62.

An inflationary gap occurs when actual output exceeds sustainable potential output. Learn how economists measure it and what can close it.

On June 25, consumer health product prices split widest in electrolyte powder: it ranged 100.4% between cities, while acetaminophen and antacids stayed below 8%.

Types of inflation include four commonly discussed mechanisms—demand-pull, cost-push, built-in, and monetary—plus hyperinflation.

The Consumer Price Index measures changes in a broad consumer basket. Learn the formula and the differences between CPI-U, CPI-W, and core CPI.

The inflation rate is the percentage change in prices over time. See the formula, CPI context, and why category and city prices can differ.

On June 22, the cost of cat ownership per year for recurring supplies ranged from $638.52 in Clayton to $754.45 in South Philadelphia; wet cat food and litter explained most of the gap.

On June 18, the cost of dog ownership per year for recurring supplies ranged from about $882 in West San Antonio to $1,063 in Westside Jacksonville; dry dog food explained most of the gap.

Coffee prices by city ranged from $122.97 in West San Antonio to $131.04 in East St. Louis on June 15; creamer varied 27.5% between cities.

On June 13, the Burger Index put North Jackson at $6.36 and North Center/Avondale Chicago at $4.81; buns, lettuce, and beef created most of the gap.

Acetaminophen Price Index, Trends and History: Daily city prices for 100 solid acetaminophen units. Compare current city prices, daily history, and methodology.

Adhesive Bandage Price Index, Trends and History: Daily city prices for a 100-bandage package equivalent. Compare current city prices, daily history, and methodology.

Air Conditioner Prices by City: Daily city cost of a six-category basket of portable, window, through-wall, and mini-split air conditioners. Compare current city prices, daily history, and methodology.

Allergy Medicine Price Index, Trends and History: Daily city prices for 100 solid oral allergy medicine units. Compare current city prices, daily history, and methodology.

American Cheese Price Index, Trends and History: Daily city prices for an 8-slice package equivalent of American cheese. Compare current city prices, daily history, and methodology.

Beef Patty Price Index, Trends and History: Daily city prices for one pound of raw ground beef. Compare current city prices, daily history, and methodology.

Burger Cost by City: Daily city cost of buns, beef, American cheese, lettuce, onions, pickles, and condiments for one double-patty burger. Compare current city prices, daily history, and methodology.

Cat Litter Price Index, Trends and History: Daily city prices for a 20-pound box equivalent of cat litter. Compare current city prices, daily history, and methodology.

Cat Treat Price Index, Trends and History: Daily city prices for an 8-ounce pouch equivalent of cat treats. Compare current city prices, daily history, and methodology.

Chewable Antacid Price Index, Trends and History: Daily city prices for a 100-tablet equivalent of chewable antacids. Compare current city prices, daily history, and methodology.

Coffee Creamer Price Index, Trends and History: Daily city prices for 32 fluid ounces of liquid coffee creamer. Compare current city prices, daily history, and methodology.

Coffee Pod Price Index, Trends and History: Daily city prices for a 24-pod package equivalent. Compare current city prices, daily history, and methodology.

Coffee Price Trends by City: Daily city cost of a seven-format basket spanning ground coffee, whole beans, pods, instant coffee, ready-to-drink coffee, iced coffee and cold brew, and creamer. Compare current city prices, daily history, and methodology.

Consumer Health Retail Goods Inflation: Daily city price movement for an equal-weight basket of 11 consumer health retail goods. Compare current city prices, daily history, and methodology.

Cost of Cat Ownership Per Year: Annual city cost of dry food, wet food, litter, treats, and litter box liners for one cat. Compare current city prices, daily history, and methodology.

Cost of Dog Ownership Per Year: Annual city cost of dry food, wet food, treats, waste bags, training pads, and shampoo for a mid-sized dog. Compare current city prices, daily history, and methodology.

DDR5 RAM Price Per GB: Daily DDR5 RAM price per gigabyte across 12 U.S. cities. Compare current city prices, daily history, and methodology.

Dog Shampoo Price Index, Trends and History: Daily city prices for a 16-fluid-ounce bottle equivalent of dog shampoo. Compare current city prices, daily history, and methodology.

Dog Training Pad Price Index, Trends and History: Daily city prices for a 50-pad pack equivalent. Compare current city prices, daily history, and methodology.

Dog Treat Price Index, Trends and History: Daily city prices for a 22-ounce bag equivalent of dog treats. Compare current city prices, daily history, and methodology.

Dog Waste Bag Price Index, Trends and History: Daily city prices for a 270-bag pack equivalent. Compare current city prices, daily history, and methodology.

Dry Cat Food Price Index, Trends and History: Daily city prices for a 16-pound bag equivalent of dry cat food. Compare current city prices, daily history, and methodology.

Dry Dog Food Price Index, Trends and History: Daily city prices for a 15-pound bag equivalent of dry dog food. Compare current city prices, daily history, and methodology.

Electrolyte Powder Price Index, Trends and History: Daily city prices for 30 servings or packets of electrolyte powder. Compare current city prices, daily history, and methodology.

Feminine Wipe Price Index, Trends and History: Daily city prices for a 40-wipe package equivalent. Compare current city prices, daily history, and methodology.

Ground Coffee Price Index, Trends and History: Daily city prices for a 12-ounce package equivalent of ground coffee. Compare current city prices, daily history, and methodology.

Hamburger Bun Price Index, Trends and History: Daily city prices for a 10-bun package equivalent. Compare current city prices, daily history, and methodology.

Ibuprofen Price Index, Trends and History: Daily city prices for 100 solid ibuprofen units. Compare current city prices, daily history, and methodology.

Iced Coffee and Cold Brew Price Index, Trends and History: Daily city prices for a 64-fluid-ounce package equivalent of iced coffee or cold brew. Compare current city prices, daily history, and methodology.

Instant Coffee Price Index, Trends and History: Daily city prices for an 8-ounce jar equivalent of instant coffee. Compare current city prices, daily history, and methodology.

Internal Hard Drive (HDD) Price Per TB: Daily internal hard-drive price per terabyte across 12 U.S. cities. Compare current city prices, daily history, and methodology.

Ketchup Price Index, Trends and History: Daily city prices for a 20-ounce bottle equivalent of ketchup. Compare current city prices, daily history, and methodology.

Lettuce Price Index, Trends and History: Daily city prices for one lettuce item. Compare current city prices, daily history, and methodology.

Litter Box Liner Price Index, Trends and History: Daily city prices for a 20-liner pack equivalent. Compare current city prices, daily history, and methodology.

Magnesium Supplement Price Index, Trends and History: Daily city prices per 100 solid retail units, grouped across dosage strengths and standardized by unit count. Compare current city prices, daily history, and methodology.

Mayonnaise Price Index, Trends and History: Daily city prices for a 30-fluid-ounce container equivalent of mayonnaise. Compare current city prices, daily history, and methodology.

Melatonin Supplement Price Index, Trends and History: Daily city prices per 100 solid retail units, grouped across dosage strengths and standardized by unit count. Compare current city prices, daily history, and methodology.

Menstrual Care Product Inflation: Daily city price movement for a nine-product basket spanning pads, tampons, liners, cups, discs, period underwear, wipes, pain relief, and heat patches. Compare current city prices, daily history, and methodology.

Menstrual Cup Price Index, Trends and History: Daily city prices for one menstrual cup. Compare current city prices, daily history, and methodology.

Menstrual Disc Price Index, Trends and History: Daily city prices for one menstrual disc. Compare current city prices, daily history, and methodology.

Menstrual Heat Patch Price Index, Trends and History: Daily city prices for a 4-patch package equivalent. Compare current city prices, daily history, and methodology.

Menstrual Pad Price Index, Trends and History: Daily city prices for a 40-pad package equivalent. Compare current city prices, daily history, and methodology.

Menstrual Pain Relief Price Index, Trends and History: Daily city prices for a 40-dose package equivalent of menstrual pain relief. Compare current city prices, daily history, and methodology.

Mini-Split AC Prices: Daily city prices for one mini-split air conditioner or heat pump. Compare current city prices, daily history, and methodology.

Multivitamin Price Index, Trends and History: Daily city prices per 100 solid retail units, grouped across dosage strengths and standardized by unit count. Compare current city prices, daily history, and methodology.

Mustard Price Index, Trends and History: Daily city prices for a 12-ounce bottle equivalent of mustard. Compare current city prices, daily history, and methodology.

NVMe SSD Price Per TB: Daily NVMe SSD price per terabyte across 12 U.S. cities. Compare current city prices, daily history, and methodology.

Onion Price Index, Trends and History: Daily city prices for one pound of fresh common onions. Compare current city prices, daily history, and methodology.

Pantyliner Price Index, Trends and History: Daily city prices for a 100-liner package equivalent. Compare current city prices, daily history, and methodology.

Period Underwear Price Index, Trends and History: Daily city prices for one period underwear garment. Compare current city prices, daily history, and methodology.

Pickle Price Index, Trends and History: Daily city prices for a 16-fluid-ounce jar equivalent of pickles. Compare current city prices, daily history, and methodology.

Pickle Relish Price Index, Trends and History: Daily city prices for a 12-fluid-ounce jar equivalent of pickle relish. Compare current city prices, daily history, and methodology.

Portable AC Prices, 12,000+ BTU: Daily city prices for one portable air conditioner rated 12,000 BTU or more. Compare current city prices, daily history, and methodology.

Portable AC Prices, 8,000-11,999 BTU: Daily city prices for one portable air conditioner rated 8,000-11,999 BTU. Compare current city prices, daily history, and methodology.

Ready-to-Drink Coffee Price Index, Trends and History: Daily city prices for a 64-fluid-ounce package equivalent of bottled or canned coffee drinks. Compare current city prices, daily history, and methodology.

Tampon Price Index, Trends and History: Daily city prices for a 40-tampon package equivalent. Compare current city prices, daily history, and methodology.

Thermometer Price Index, Trends and History: Daily city prices for one thermometer. Compare current city prices, daily history, and methodology.

Through-Wall AC Prices, 8,000-14,999 BTU: Daily city prices for one through-wall air conditioner rated 8,000-14,999 BTU. Compare current city prices, daily history, and methodology.

Vitamin D Supplement Price Index, Trends and History: Daily city prices per 100 solid retail units, grouped across dosage strengths and standardized by unit count. Compare current city prices, daily history, and methodology.

Wet Cat Food Price Index, Trends and History: Daily city prices for a 3-ounce can equivalent of wet cat food. Compare current city prices, daily history, and methodology.

Wet Dog Food Price Index, Trends and History: Daily city prices for a 12.5-ounce can equivalent of wet dog food. Compare current city prices, daily history, and methodology.

Whole Bean Coffee Price Index, Trends and History: Daily city prices for a 12-ounce package equivalent of whole-bean coffee. Compare current city prices, daily history, and methodology.

Window AC Prices, 8,000-14,999 BTU: Daily city prices for one window air conditioner rated 8,000-14,999 BTU. Compare current city prices, daily history, and methodology.

Window AC Prices, Under 8,000 BTU: Daily city prices for one window air conditioner rated below 8,000 BTU. Compare current city prices, daily history, and methodology.

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