In June 2016, Uma Valeti, CEO of Memphis Meats reported a production cost of about €36,200/kg, which represents an 18-fold price reduction compared with the €650,000/kg burger unveiled in 2013. Mark Post, the chief science officer of Mosa Meat, announced in late 2015 that, by combining pharmaceutical bioreactor technology to existing tissue culture techniques it'd be possible reduce costs to €60/kg of cultured ground beef. (Sentience Politics, 2016; p.g. 6) points out that existing farm subsidies essentially create a barrier to entry for clean meat producers:

while the cost of cultured meat should aim to match that of regular meat, the current market average of meat is artificially low as a result of heavy government subsidising of animal agriculture.

Mark Post has also made more predictions. In 2017, he predicted that it will take 3–4 years (i.e., 2020–2021) before cultured burgers are on the market for £10–11 (~$12–$14 USD) per burger, and in around 7 years time (~2024) they will be in supermarkets at lower prices. However, regulatory uncertainty, might prevent clean meat companies from scaling anytime soon, thereby blocking the path to substantial cost reductions.

What will be the lowest retail price, in 2019USD per kg, of any product containing 50% clean meat in 2026?

This question will resolve as the lowest reported price, in 2019 USD per kg, of any product listed in a retail supermarkets that contains at least 50% clean meat by weight. Qualifying retail supermarkets are those based in either the U.S. or based in the European Union as of August, 2019, and Switzerland.

Clean meat is here defined as meat that is grown primarily or entirely in cell culture, rather than in an animal’s body. Qualifying meats are beef, any type of poultry, pork or fish. The clean meat product must be for human consumption. Moreover, the product must have a weight exceeding 40 grams (so that the clean meat content weighs at least 20 grams). Mixtures of clean meat and other products qualify if it contains at least 50% clean meat by weight.

Evidence of the clean meat containing product's listing price and composition should come from credible media reports, online supermarket listings, or from at least three reports sourced from social media and/or submissions by Metaculus users/admin.

The following sales do not identify the price of the product for the purpose of this question: samples given out for free, sales discounted with one-time discounts or discounts derived from coupons, or programmes such as loyalty schemes or credit card membership, amongst other pricing schemes valid for limited time or only available to a subset of customers.

A supermarket is here defined as the company that operates physical self-service retail markets that sell foods and household merchandise. The supermarket must have at least ten physical stores (although the clean meat product need only be on offer in at least one store). A list of examples of U.S. based supermarkets that qualify today can be found here. These will continue to qualify as supermarkets as long as these operate at least ten physical self-service retail markets.

Prices are to be adjusted to 2019 prices using a widely used national CPI. Credibility of estimates shall be decided by Metaculus admin. In case the retail price is denominated in currencies other than USD, the conversion shall be made using the relevant spot exchange rate at the time of resolving.

If no credible reports indicate that clean meat products containing at least 50% clean meat are sold in the calendar year 2026 in retail supermarkets based in either the U.S. or based in the European Union as of August, 2019, and Switzerland, this question will resolve as Ambiguous.