I haven't had a problem with them ordering, although I've only ordered from them once, about 2 years ago.
I can say, that I am a bit disappointed in how they handled the Tiffany kit by Natali Blick. Natali had a problem with having all her kits made to fill her dealers order. She asked all her dealers to hold shipping their kits until everyone had them. DSR decided to ship theirs, apparently, and I have had several complaints from my buyers asking why I won't ship, and had a few people back out on their preorders from me causing me a nice loss of $$.
So, yeah, not really happy with people that can't follow simple rules to keep things fair. But as far as shipping goes...I didn't have a problem with them.