When I bought my lightly used FJR a couple of years ago, I compared the prices in Vancouver with those in Washington state. The short version of the story is that I bought it in Washington state. I saved about $2,000 even though I had to pay GST at the border. Had I bought a used bike from a dealer in Vancouver, I would have paid GST but not from a private transaction. PST applies in both cases. I did not have to pay Washington state sales tax.
Now, nearly 3 years later, our dollar is floating around .95US and the price differences can be even greater.
I did a 5 minute comparison on some Yamaha models, getting the info from Pac.Yamaha's (Richmond) website and Eastside Motorsports (Seattle) website. I assume that: the stated prices are fixed, PDI will be comparable, that no Wa.state taxes apply, and that GST & PST apply. Therefore, the comparison is fairly simply other than you'd have some additional transportation costs to Seattle & some paperwork. The biggest problem you are likely to experience would be warranty issues and that may close the price gap for you. It wouldn't for me.
I don't blame the dealers for these price differences; I point my finger at the manufacturers. I also assume that the others - Honda, Suzuki, & Kawasaki have similar prices differences. The only way to get the prices in line is to put some pressure on the dealers and vote with your cheque book.
I'm not trying to convince anyone to buy south of the border as I believe in supporting my local business but not when the price gaps are so big.
Here's my comparison:
Here is a checklist that I made up when I imported my FJR. Both my brother and a couple of friend have followed this and found the process hassle free :