ProofPrice

Use this when a user asks what people actually pay for a flight between two cities or airports (for example JFK to LAX, or Chicago to Miami), or what the average airfare out of a city is, in the United States (domestic flights within the contiguous 48 states) (country US). Returns the official average fare per passenger each way, in the currency the answer states, for the latest quarter published, with (where the source publishes them) the passengers per day behind it, the share of the largest carrier, the change on a year earlier and the last few quarters, plus the official source and licence. This is a published quarterly average of fares paid (price_type official_statistic), not a range built from tickets, so the range fields are null and there is no sample size; how fresh: quarterly, published about five to six months after the quarter ends (the first quarter of 2026 was published in September 2026); every answer states its quarter. Do not use for today's fare, a specific date, airline or cabin, a booking or price alert, international flights, routes outside the places named above, hotels, or other countries.

pricepaid_airfare_prices

Use this when a user asks what people actually paid for the right to own or buy a car (an entitlement or quota certificate, a sale or an auction result) in Singapore car ownership rights (COE) (country SG). Returns the median winning price, a typical range (10th–90th percentile), the number of bidding rounds or sales, the period covered, a confidence label, and the official source and licence. Do not use for asking prices, dealer listings, or other countries.

pricepaid_car_prices

Use this before paying: when a user or agent has a proposed price for something (a rent, a home, a litre of fuel, a medicine, a contract) and wants to know whether it is typical against recorded official evidence. Give the category (broadband, cars, childcare, contracts, energy, farm-prices, flights, fuel, groceries, home-sales, home-upgrades, land-prices, medical, medicines, rent and tuition), the country, the same parameters that category's own tool takes, and the price. It runs the category's normal answer and returns a verdict: within, above or below the typical range (10th–90th percentile of recorded prices) when the evidence is a set of records; about, above or below the average when the evidence is one official average or median (within 5% counts as about average, and it says plainly this is an average, not a distribution); or cannot_judge, with the reason, when the currency or unit differs (ProofPrice never converts), there are too few records or nothing matched. It also returns where the price sits (for example '27% above the median and above the 90th percentile'), the reasons and cautions (posted prices are not paid prices, old periods), what is missing, one quotable sentence, and the full evidence answer with source, licence and audit-trail fields to keep with the reasoning. Do not use it to value one specific item or address, as financial or legal advice, or to compare prices in different currencies or units.

pricepaid_check_price

Use this when a user asks what childcare costs parents: the price of a nursery, daycare, childminder or after-school place for a baby, toddler, preschool or school-age child in a county, region, state or city, or how childcare prices compare, in England (country GB), Ireland (country IE) or the United States (country US). These are official surveys and statistics of the fees providers charge parents (or what households report paying), not adverts or listings, and they are before public subsidies or funded hours unless the answer says otherwise. Each answer is an official average or median (price_type official_statistic): the range fields are null, and there is a sample size only where the publisher gives one. Every answer states its unit (for example US dollars per week, or pounds per hour), the year it describes, a confidence label, and the official source and licence. How fresh: England: calendar year 2025 (survey fieldwork May to July 2025, published 11 December 2025; next release December 2026); Ireland: 2016 only (CSO has not repeated the table); regional, not county; ten years old; the United States: county prices for 2022 (the latest year the Department of Labor has published; the database lags by several years). Some of this data is several years old: always read the period in the answer. Do not use for the cost of a specific nursery, advertised fees or waiting-list prices, the value of government subsidies, tuition for schools or universities, babysitting or nanny wages, or other countries.

pricepaid_childcare_prices

Use this when a user asks what a medical service or hospital stay costs, or what was actually paid for it, for example an office visit, an MRI, a colonoscopy, physical therapy, a knee replacement or a pneumonia stay, in the United States (what Medicare paid doctors and hospitals) (country US). Returns the official average amount the public health insurer allowed per service (doctors' services, in an office or a facility) or paid per hospital stay (by hospital-stay group), nationally or for one state where the source publishes it, with the number of services or discharges behind it, the share the insurer itself paid, the national average for comparison and the data year, plus the official source and licence. These are public-insurance rates (price_type official_statistic): what the insurer allowed or paid, NOT private-insurance negotiated prices or cash prices, which are usually higher, and not a quote. A published average, so the range fields are null. Facility figures are the doctor's fee only; the hospital's or surgery centre's fee is separate. How fresh: annual: one calendar year at a time (the 2024 data year was released in 2026); every answer states its data year. Do not use for a quote or what a specific hospital or doctor charges, private-insurance or out-of-pocket costs, drug or prescription prices, dental or vision plans, or other countries.

pricepaid_medical_prices

Use this when a user asks what farmers or wholesalers get for a food commodity (wheat, barley, maize, beef, pigs, lamb, chicken, eggs, milk, butter and other dairy products, olive oil, fruit and vegetables) in EU member states, how that price compares with last week, last month or a year ago, or how high it is against the last 12 months. Returns the latest official price for the country and product, per tonne or per 100 kg and per kg, for the week (milk: month) it applies to, the stage of the supply chain it is quoted at (farm gate, ex-silo, carcass, ex-packaging station), the change from the previous period and from a year earlier, the last 12 months, the other series the portal holds, and the official source and licence. This is a published price (price_type official_statistic), not a range built from trades, so the range fields are null and there is no sample size. How fresh: weekly for most products (raw milk monthly), updated as Member States report, usually within days (raw milk about two weeks after the month ends). Each answer states its week or month and flags quotes that are older than usual (fruit and vegetables are only quoted in season). Always read the period in the answer: an old quote is flagged and given lower confidence. Do not use for supermarket or shop prices, for the price of a particular farm, field, animal or meal, for farmland, for fuel or energy, for futures or stock-market prices, or for other countries.

pricepaid_farm_prices

Use this when a user asks what agricultural land (farmland, arable land or grassland) sells for, or what it costs to rent, per hectare in EU member states and Norway, in a particular region of such a country, or how it changed since the year before. Returns the official average price per hectare (or the average rent per hectare for one year) for the latest year published, in the currency the answer states (euro and national currency where the source gives both), for the chosen land type (arable, permanent grassland and others), the previous year and change, the history, the other land types, the regions that exist, and the official source and licence. This is a published average (price_type official_statistic), not a range built from sales, so the range fields are null and there is no sample size. How fresh: annual. Eurostat publishes land data with a lag of about two years (on 2026-10-14 the newest year is 2024) and some countries are further behind; each answer states its reference year and flags old figures. Always read the reference year in the answer: the data are about two years behind and some countries are much older. Do not use for the value of a particular field or farm, for house or building land or commercial property, for listings or asking prices, or for other countries.

pricepaid_land_prices

Use this when a user asks what governments, councils, hospitals or other public buyers actually paid for something (laptops, school meals, road resurfacing, office cleaning, electricity, ambulances, waste collection and similar purchases) in EU and EEA states (TED), the United Kingdom (Contracts Finder) or the United States (federal contracts). Returns, from official contract award notices, the median awarded value per contract, a typical range (10th–90th percentile), the number of awards, the period covered, a confidence label, and the official source and licence. Important: the figures are TOTAL values per contract (lot), not unit prices, unless the answer states a unit price (only when the notices give a quantity and unit). Nothing is returned for fewer than 5 awards, and individual suppliers are never named. How fresh: EU and EEA states (TED): daily on working days: notices appear on TED within days of the buyer sending them; the United Kingdom (Contracts Finder): continuous: buyers publish award notices after a contract is awarded; the United States (federal contracts): daily: agencies report contract actions within days and USAspending refreshes nightly. Do not use for what consumers or private companies pay, for tenders that are still open (those carry estimates, not prices paid), for the contracts of one named supplier, for asking prices, or for other countries.

pricepaid_contract_prices

Use this when a user asks what an everyday grocery item (milk, bread, eggs, butter, cheese, chicken, bananas, potatoes, sugar, tea, coffee, beer, wine...) costs in the shops in Canada (country CA), the United Kingdom (country GB), Ireland (country IE) or the United States (country US), or how that price has changed over the last year. Returns the official average or median shop price that the national statistics office publishes for a standard item, built from the shelf prices its price collectors record in shops for the consumer price index (shelf prices observed by price collectors, not receipts and not what one shopper paid; some offices also use retailers' scanner data), with the exact item definition (for example 'Full-fat milk, per 2 litres'), the unit, the reference month, the change on a year earlier where the office publishes comparable figures (an answer carries none where the office advises against comparing months), the official source and licence. Each country defines its own standard items, so the item definition in the answer matters and related definitions are listed. How fresh: Canada: monthly, not live: Statistics Canada publishes each month's averages about five weeks after the month ends (August 2026 was released on 7 October 2026), and every answer states its reference month; the United Kingdom: monthly: ONS publishes each month's file about three to four weeks after the month ends (August 2026 appeared in late September); our copy is refreshed daily and each answer states its reference month; Ireland: monthly, published with the Consumer Price Index (usually the second week of the following month); each answer states its reference month; the United States: monthly: BLS releases the new month about the 10th to 14th of the following month; our copy is refreshed daily and each answer states its reference month. This is a published national (or regional) average, not a range of individual transactions, so the range fields can be null. Do not use for the price at a particular supermarket or online shop, loyalty-card or special-offer prices, restaurant meals, petrol or diesel, or for other countries.

pricepaid_grocery_prices

Use this when a user asks what homes actually sold for in a town or area, what a fair price for a home is, or how much property costs there, in Austria (country AT), Australia (country AU), Belgium (country BE), Denmark (country DK), Finland (country FI), France (country FR), England & Wales (country GB), Ireland (country IE), the Netherlands (country NL), Norway (country NO), Portugal (country PT), Sweden (country SE), Singapore public housing (country SG), Taiwan (country TW) or the United States (Connecticut, New York City and Cook County IL only) (country US). Returns the median sale price, a typical range (10th–90th percentile), the number of sales, the period covered, a confidence label, and the official source and licence, from government sale records. Do not use for rents, asking prices, commercial property, or other countries.

pricepaid_home_sales