yeah I am looking for the same thing. My beardies go through so many crickets per week. its actually ridiculous how much it costs me, and I'm a student in Uni so you could only imagine how broke I am lol.
I live in Oshawa in the GTA, so if anyone can answer his question I'd be interested in knowing as well.
The cheapest I can get crickets for are $22 for 1000 at the Reptile expo but it doesn't happen very often. There should be some cricket selling at the Pet expo in Mississauga. My cousin said she bought her snakes there so I don't see why they wouldn't have feeders.