Yep, electronics are cheaper in the States, Michel depending on what you want. But, I know that Costco Canada tries to match Costco US prices but I don't think they have because food is still cheaper there.
I might be heading to Costco States this weekend, let me know what you're interested in and I'll see if I can sneak a photo or at least write the prices down for you.
The $100 off tjhat GPS is a GOOD deal.