They have good prices, are good with shipping, almost everything arrives alive, and they have a great selection, Crickets, superworms, silkworms, butterworms, waxworms, hornworms, mealworms, repti-worms (black soldier fly larvae, like phoenix worms, different "brand".) I do like the phoenix worms better though. They also have good combo deals.
Most of the silkworms you buy anywhere else come from these guys to begin with, including mulberry farms apparently. They also sell hornworms and phoenix worms.
Buying live feeders from ebay kinda scares me. I suppose if you research and know who the seller is, but who knows if these guys are feeding the insects properly, or if they are just buying the 1000 count cricket boxes from ghann's or another cricket farm and letting them sit in the garage and die until they sell them.