|This page is an essay, containing the advice or opinions of one or more Wikipedia contributors. Essays are not Wikipedia policies or guidelines. Some essays represent widespread norms; others only represent minority viewpoints.||
Wikipedia has no specific policy on presenting prices of products. While some have argued that Wikipedia should not include prices because Wikipedia is not a directory many WP:Featured articles contain pricing information.
This makes it clear that the community is divided on the matter.
The current policy regarding prices is outlined in WP:NOTCATALOG: "An article should not include product pricing or availability information unless there is an independent source and a justified reason for the mention. Encyclopedic significance may be indicated if mainstream media sources (not just product reviews) provide commentary on these details...".
Wikipedia can report anything which third-party secondary sources report. Most prices come from either self-published sources or from directories or databases, and by Wikipedia policy, that is a reason to not include prices.
Some primary information from databases has always been included in Wikipedia, including the population of cities and various properties of chemicals. The rationale in these cases is that some amount of primary information is necessary for understanding the nature of a thing. If prices of products were included in Wikipedia routinely, then probably someone would have to make a persuasive argument that the price gave fundamental information about the nature of a thing. When including prices, they would need to be matched to reliable sources, which is fairly easy in most cases as prices are given in many textbooks such as the British National Formulary, by government agencies, and by international governmental organization such as the World Health Organization. Cost benefit analysis is a central part of many government run health care systems.
Until about 2015 the central place for discussing policy on prices was Wikipedia:What_Wikipedia_is_not#Wikipedia_is_not_a_directory, and redirects including WP:PRICE, WP:PRICES, and WP:NOPRICES went there. The precedent of discussions there should guide whatever is discussed presently.
Discussions about best practices
In medical articles there has been discussion about whether a drug can be understood without knowing its price. There are arguments for both sides.
- WikiProject Medicine archive 19 - 2010 guidance that drug prices are not allowed
- WikiProject Medicine archive 47 - casual mention of price in 2014
- WikiProject Medicine archive 67 - June 2015 proposal to include prices in Template:Infobox drug
- Infobox drug talk page - August 2015 proposal to include prices in Template:Infobox drug Concludes that prices should be included in drug articles.
- d:Wikidata_talk:WikiProject_Medicine#Drug_prices - Successful October 2015 proposal to put prices in Wikidata.
- WikiProject Medicine archive 78 - "Reliable sources for drug pricing", March 2016
- Wikipedia_talk:WikiProject_Medicine#Price_of_medications - May 2016 discussion