I got enough of a kick out seeing a live demo of this trick, that I purchased one. Seemed like a nice variation of three card monte, and, the cards were novel. It became clear at some point that I could make my own version of the trick, which is actually on one of Michael Ammar's 'Easy to Learn Card Miracles'. The problem I had with the Card-Shark cards, was that they stuck together after a few practice handlings. Bicycles can do the same, but it takes longer. Also the texture of the cards is a bit grainier. It seemed to be the coating itself though slowed things down. Maybe card powder would've worked. When I perform this now, I use regular cards, and these look far less suspicious than the Dollar Monte Cards. I love the routine, and the inverted ending-I was not thrilled with the included patter, which is a complicated 'lesson' story about a card shark, a casino, a security camera...something I wouldn't have come up with, or would use. As usable a routine as this is, the price is higher than I think it should be-particularly when I already had usable normal cards already laying around. Very good routine, in spite of potential negatives.