|This essay contains 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. Historically Wikipedia has defaulted to not include prices because Wikipedia is not a directory.
There is other thought on the matter. It is not certain whether Wikipedia should present prices.
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.
In medical articles there has been discussion about whether a drug can be understood without knowing its price. There are arguments for both sides.
- Wikipedia_talk:WikiProject_Medicine/Archive_19#Drug_pricing_reminder - 2010 guidance that drug prices are not allowed
- Wikipedia_talk:WikiProject_Medicine/Archive_47#Salbutamol_inhalers - casual mention of price in 2014
- Wikipedia_talk:WikiProject_Medicine/Archive_67#Prices - June 2015 proposal to include prices in Template:Infobox drug
- Template_talk:Infobox_drug#Making_the_template_more_useful_for_people - 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.