Space can be an issue, I raised mine for 2 years in a single 15 gallon storage container. I didn't go through hundreds a week, more like 2-3 hundred a month but never ran out. Stacking lots of cardboard, egg cartons and other stuff gave them tons of room and I had more than I ever thought I could get very quickly.

I haven't tried to order in a while but used wormman, once and probably not again for crickets, then went with Nyfarms for my second order with great results. This was many years ago though so service and care could be very different by now.