If all you want is to buy posters and wall scrolls, I usually get mine at AnimeXtreme in downtown Toronto. Last I checked their wallscrolls were $20, and you could get three small posters for $10. You won't find them too much cheaper than that at the con, and if you do, it'll be the ones they're trying to get rid of that no one wants to buy. I guess there will be a bit more variety at the con too, if you're looking for a wallscroll of a more obscure series.