When i was looking at getting a US bike... it would have been about 20%-30% cheaper to buy it states side...
In the end, I ended buying mine in Canada though.. completely different bike also though...
it comes down to, are you willing to trust someone before you make a 5 or 6 hour or even more drive with a trailer...
then store it for a few days across the border and then bring it home...
the savings is there, but how many bikes do you look at here where the guy says it's mint and you show up and the thing looks like it's done a tour in afghanistan...
scraped, broken, etc...
now picture that after driving a long ways to see it...
I took a gamble and drove 3 hours to see my bike, and i'm glad i did, but i've read lots of horror stories online and even on craigslists where a guy drives hours to see a "mint" bike and it's a wreck...