where can i get good canvas boards cheap? (notice i said good, and cheap)?

Answer 1

If you're looking for a lot of them, you can sometimes get good deals buying wholesale from a company.

Keep an eye on the local craft store ads. Michaels and AC Moores often have good sales, but you need to get there fast. They sell out quick when the deal is good.

EBay? Although, you always run the risk of not getting the best quality there.

Answer 2

Sorry, you get what you pay for.