Easy trick to learn, and cheap to buy

A few months ago, I encountered a trick that amazed me and also was really bummed out about how the trick was actually developed and manufactured. But I'm not here to tell you the trick, but to encourage you to see the trick and perform it as well. It's called "the invisible deck" where a spectator gets to choose any card from a borrowed deck or to think of a card. It will not sound satisfying if I explain it to you, but better yet show you the trick and how it is performed.And it is very cheap to buy, actually, i should say it is a steal off the market. You can buy it off from Amazon or a Magic shop. Enjoy!