I have a BCI and a Dumeril's. As far as Dumeril's go, they are usually priced $125 to $150. I got mine from a local breeder. High pinks a peaches in their colors are more desirable. They are not aggressive, but would rather run and hide. Mine stays hidden most of the time, but she is awesome. You should definitely get one!
Oh definitely how big is yours and how do you house? I was probably going to build a boa rack.