There is an Apple Store at Oakridge Centre Mall, which is on the Canada Line Subway out from YVR. It's a 15-minute journey on the train.
http://www.apple.com/ca/retail/oakridgecentre/
http://thecanadaline.com/station-gui...e-41st-station
If you complete the journey in 90 minutes you can go there and back on one ticket.
You will be paying 12% in sales tax on the purchase.