I wouldn't do it either. Aside from the fact that it's a lot of money for animal with plenty of known issues that could affect your current collection, purchasing it just encourages that store to bring another high value snake to sell. As long as people keep buying these animals, stores will keep selling them.
I know people want to save them, but buying this one to save it, just means more will be brought in and end up being mistreated.
I think you might be better off simply trying to educate the store on proper maintenance and housing. At least then this snake will have a slightly improved life, and any that come after it have a chance at a better setup.