We all know Reddit is a source of pretty strange stuff. This one we came across isn't exactly strange, but it's a rare one indeed. A customer walked into Best Buy with the intention of buying a second-gen Chromecast but walked out with a still unreleased third generation. The OP (original poster) as redditors like to call it, clarifies that Best Buy must have put out the new device by mistake. When the cashier tried to scan the item, the Chromecast didn't appear in the database, but since the customer already had it in his hand and the price was identical to the second generation...
Source: https://www.gsmarena.com/best_buy_accidentally_sold_a_3rd_generation_chromecast_to_a_customer-news-33522.php