It's just not the suppliers, it's the store. Regardless of how caring the employees are, ball pythons are very sensitive as far as snakes go. The tiniest issue can cause them to go off feed for months. A lot of reptiles are a lot more forgiving and can live in "pet store" conditions without too much of a problem. Unfortunately, ball pythons are not the same. Pet stores, especially the chain ones, tend to make the tanks too hot and too "cluttered" with roomates. The humidity also sucks due to blinding lights (which also stress out the ball pythons) causing the bad sheds and possible dehydration. No offense to you at all or even any of the other employees, because I know it's not technically their fault they HAVE to run by corporate "standards", but this is why ball pythons in pet stores generally look very sick.

As far as helping, the most you could do is help with the stuck shed by soaking them. They will probably really appreciate it and feel a little better, plus it might feel good to get out of those lights for a short time. You could also move the half log hides (which suck...but I know you have to use them) against the back side of the glass. It will help seclude the back side of the hide a little more. You could also mist when no one's looking, to help up the humidity, and always put out fresh water to the rim. These are all little things that don't cost any extra, I wish you luck.