The sleights involved with Garrett Thomas's effect are perhaps on the intermediate side. No knuckle-busting required, thankfully. But audience management is most important, as the full routine requires you to place the gimmick in the spectator's hands for a number of beats. The instruction is thorough enough to coach you through, but some people will never be comfortable with this idea. Also, you would probably want to be proficient with a ditch that you normally see in a coin effect like this. Again, this is well taught, but know that nothing about this is self-working. It's all YOU. If you like the effect and are serious about your craft, this is certainly a great effect to learn.