I get my stuff from Wiggle (UK) or ChainReactionCycles (Ireland). Much cheaper from those 2 (along with PBK although they had security issues a couple of months ago) compared to most online stores in the US. Sadly I haven't seen any Canadian operated web store front for bike parts that can compete with sites across based in the UK or Ireland. With Wiggle the few times I ordered from them, shipping was free (after you exceed a certain amount), and I did not get dinged with brokerage fees nor taxes. With ChainReactionCycles, the wheels I ordered where shipped free of charge but I did have to pay HST... price still came out way cheaper than if I bought the wheels elsewhere.