Here’s a pre-order over at Amazon. This NBA 2K21 Mamba Forever Edition in PS4, Xbox One and Nintendo Switch is scheduled to be released on 9/4/20. Right now you can pre-order it at Amazon for $99.99. This comes with their price guarantee. If the price drops before the item is released, you’ll get the difference refunded. Here is the link to get yours:
NBA 2K21 Mamba Forever Edition – pre-order for $99.99