There are a number of CG breeders on bp.net, right now the only one popping to my head is emily cook of cookreptiles.com
I highly recommend checking out pangeareptile.com, Matt there sells CGs and is a standup guy. He also has a great rhacodactylus forum with a number of banner ads from CG breeders, and they have a classifieds section there. I regularly get my CG diet from pangea reptile.
I have to give a shoutout to supremegecko.com and gorgeousgecko.com and are 100% top notch people, I've got geckos from both in my collection
Anthony Caponetto of ACreptiles.com is also a great guy with crested geckos, but I know him more for his carpet pythons.
Hope that helps! I wish I could remember more of the people here on bp.net, but my brain is fuzzing out on me!