I would love some suggestions myself of good canadian sites with low prices but I've yet to find any. I order most of cycling items (not bikes) from probikekit, wiggle, ribble and chainreactioncycles and evans cycle all based out of the uk.
avoid ordering stuff online from places that ship using ups or fedex from the states.
Otherwise, I shop the US sites before the Euro sites for clothing. Duty and taxes gets pretty steep from Europe on clothing.
Really? I've found it nothing but the opposite that the US stores have huge duty at the border as most use Fedex or UPS and the UK shops that use Royal Mail very rarely do I pay any additional fees at the border and there prices are better.