Blackjack X-Change

Hi Wizard Of Odds

I came across a new blackjack game on the golden nugget casino site in NJ, it was called Blackjack X-Change, I wondered if u had yet come across it, it offers the player the option to trade their cards (buy and sell cards) during the game.

I was intrigued by how they were able to do this as I have never seen anything similar on a BJ game before, can u provide any insight?

Thanks in advance

Chelse