theory11 — Magic Tricks & the World's Finest Playing Cards

Good Coin shell?

Usually "inexpensive" and "good quality" are mutually exclusive!

That being said, Johnson is not bad at all for the price.
 
A reasonable shell such as a Tango or Johnson will do for most purposes, even with spectators burning your hands. If you hold them with a relaxed hand, the folds of your hand will cover any tell-tale signs.

I have a couple of Schoolcraft sets. They're invisible and beautifully made, but expensive. Most people don't need such a high quality shell, it's more for the pleasure of owning something so perfect.
 
The rules are available online, so all you really need is a set of pieces with enough variety to keep things interesting.
 
My first shell was expanded Tango Half Dollar and yes it's cheap but so is the quality. I don't know if it's got better since I got mine two years ago. Recently I got expanded Johnson Eisenhower Dollar and it was 52$ compared to Tango's 36$. Johnson shell quality is much better than Tango in my mind.