They can be very expensive depending on the type you really want. I'll put a couple of links here for you to read through and maybe you'll have a better idea then.
Humidors: How They Stack Up - Cigar Aficionado
www.cigaraficionado.com › News & Features
Big Ronnie's Cigar 101: General Care and Humidificationfinetobacconyc.com/.../big-ronnies-cigar-101-general-care-and-humidifi..