Humidor for the Office

I've decided that I need to get a humidor to keep in my desk at work. I'm thinking a 100ct should be sufficient. I plan on keeping mostly coronas and lonsdales in it. Price is a consideration, but I'm also concerned about the quality of "cheap" humidors. Cosmetic blemishes I can deal with, they add character.

An suggestions on where to look for such a humi?

Thanks,
Sam

Thanks for the advice guys. I've got a 150 ct on the way.