It was a good experience.
I ordered some hardwood flooring and some carpet from Green Building Supply and didn't have any issue with the hardwood flooring, but I did with the carpet. Basically, they didn't send enough material, so it created a little problem with me because I had carpet guys show up but they didn't have enough padding for the job. I had to go to another supplier whose products weren't the same as Green Building Supply's, as far as being chemical free. Those things happen and I get it--it was just inconvenient more than anything.
They've got some nice people there and I'll probably buy from them again. The order just got a little screwed up, but it wasn't the end of the world. I did get a credit back for the material that wasn't sent and that I had to replace locally, so I appreciated that.