I have. He is good. Cheap. Quick. You won't get fancy bottles. But that shouldn't bother you. The stuff is packed more then well enough. If you need basic stuff like hypo or sodium sulfite then he is on Ebay with the name of Surebet2. The 10lb specials are fairly cheap. Short of getting a 50KG bag of the stuff I doubt you'll do better.
Unless you need something really special I wouldn't worry about ordering from the US. You can likely find whatever you need locally. I'm actually trying to figure out all the things that can be bought at the grocery store.-)