Suggestions for online purchases:

cigarsinternational.com
cigarbid.com
cigarauctioneer.com
holts.com
famous-smoke.com

I have purchased form the following:

tompsons.com (good for name brand samplers, their lable is not good and prices are high)
cheaphumidors.com (bought a humidor and accesories, not cigars)
famous-smoke.com
cigarbid.com
cigarauctioneer.com

Hope this info helps.