I think it's worth it. I don't think of it as a trick as much as I think of it as a gag. I wouldn't use the exact handling he uses but I like the idea of a routine with a double sided coin and the magical con is nice too.
It's definitely worth it if you are going to use it. If you don't have anywhere to do it then don't get it. If you like little practical jokes and gags I think this is a good trick that's worth the price of a Big Mac.