Pastel BCI? Morphmart, just check out the breeder and exercise due caution. It is the internet.
Venezuelan dwarf BCC? I recommend Tommy Carpenter at TC Reptile http://tcreptile.com/ . He has a solid reputation and is easy to deal with. I just received a Hog Island Boa from him. His snakes are in demand so I had to wait, but it was worth it. Frankly, we're talking about an animal that is going to live at least 20 years, what's a few months wait?
dakski here bought one of TC's Ven. dwarf BCCs and he seems thrilled. You might ask him what he thinks.