I'm not sure where you're getting your parts from Unbreakable, but as a fellow Canadian, I can tell you, my build was ~$1600 last May.
Coolermaster HAF 922...............$155
Corsair 850W PSU...................$150
LG Lightscribe DVDRW................$30
Corsair DDR2-800 4GB................$60
WD Cavair 640GB.....................$85
EVGA 750I SLi FTW..................$190
XFX GTX 285........................$385
Core 2 Duo E8400...................$200
Total............................~$1255 + tax/shipping
My 24" 1080p monitor, keyboard, mouse and speakers later added ~$450.
As Stu said, you do have some fancy stuff, like the gaming keyboard, BOSE speakers and two monitors. That said, the most expensive parts of the tower stem from the Core i7 CPU. You may see some performance increase over Core 2 Quad, but pay about twice the price for the CPU/motherboard/RAM collectively.
For your last components, look at
NCIX. THey ship out of Richmond, BC and have excellent prices, and weekly sales on a wide selection of components. You can get a
GTX 460 for as little as $160 after rebate. As you saw from my PSU, you can get that for half the price as well.
Don't feel too bad though, man. As someone who has made A LOT of bad purchasing decisions, I can tell you that you'll only do it once...usually.
Edit: As an added point, if you bought one at FutureShop, you wouldn't have had the satisfaction of gaming on something you put together yourself. I love that feeling.