i've used ebay over the past while and i have to agree. also living in canada i feel the same lack of support. i think ebay has waaaaayyy too many users, there can be so much demand for something that it drives prices up drastically. i would recommend Amazon.com's auctions - i signed up last week and just bought a huge amount of atari games, all for like $3 us or so.. the thing is, because it's more or less "undiscovered" than ebay, there's hardy any competition! not one of my bids on there were touched by anyone else, i felt like i was the first person there.
anyway, give amazon a seach for what you're looking for, i bet you'll save almost half.
carl