On Yahoo Auctions, a major auction site in Japan, a prototype Super Nintendo Entertainment System (SNES) was for 100 million yen.
The seller’s product name was “Super Nintendo Entertainment System SFC prototype console prototype development machine Nintendo SNES prototype console prototype development sample Nintendo Rare Collection Rare,” and the item description on the auction page stated that it was a prototype of the Super Nintendo Entertainment System (SNES) before the commercial version was released. The item description on the auction page states that it is a prototype of the Super Nintendo Entertainment System before the commercial version was released.
The listing for this item is currently closed.
https://page.auctions.yahoo.co.jp/jp/auction/v1135225758