I got all my stuff from them over the years. Lately, since Leroy passed, the Bag o Bugs was the best thing I got since the Grunge seems to have gone from "pretty stinkin awesome" 5 or 6 years ago to "good source of fuge rubble" now. All in all I was happy with the prices for what I got, but I wouldn't use all Grunge to start a tank or anything. It does make for some nice extra decor, however, and I'll probably give them business again.
That said, with a little homework there are seemingly better alternatives out there. I just haven't used the other guys' stuff yet to give you a valid "this guy is better" story.