if you want to save some money instead of buying a humidor
put the cigars in a box. then go to your local guitar store and buy what is called a "dampit". its used to keep acoustic guitars humidified during winter. Its a long sponge enclosed in a rubber tube with holes. You should be able to pick one up for about $12 or so.... they look like this
Dampit - The string and wood instrument humidifier to protect against cracking