Reptile owners? Question for ya

[Coasting]

Horn worms are very delicate and can be very hard to breed. Not worth it. Bacteria from your hand can be enough to kill them.

Crickets, Waxworms, Phoenix worms... tons of other bugs that are great and much cheaper. Make sure you're dusting them too. Fruits and Veggies. Cooked eggs. And heck even canned cat food (high quality)

As for a forum, theres a local one in your area, but Id try Reptiles Canada.