Magic Tricks

I hate it when you open up the instructions and find out you have to go shopping before you do the trick. You need 2 more things before you can set it up, one of them is a common magician's material (which I didn't own) and the other is something you can find in every supermarket.
The gimmick has a fault that makes it look bad at a large section of the bottle. Dealing and setting it up is messy and when you're done it just doesn't look that good.
I sold it to a fellow magician 2 days after it has arrived.