Researchers monitoring activity on underground markets found that more than 460,000 payment card records were offered for sale in two days on a popular forum where such data is being traded.
The card info is split into four databases sold separately and offered in two rounds, on October 28 and November 27.
Black market price: over $550k
Initially, the seller advertised two databases, each with data for 30,000 cards and asked $3 for each card. The offer was discovered on Joker’s Stash, a very popular market for buying and selling stolen payment card data.
The announcement said that 85% to 90% of the cards were valid and all came with all the details necessary for card not present transactions like online shopping.
Source - https://www.bleepingcomputer.com/news/security/batch-of-460-000-payment-cards-sold-on-black-market-forum/