Substantial, unjustifiable pricing differentials persist in many commodities, even with dollar equity. I just purchased a high-end Photoshop book that listed in Canada for about $60. I paid less than $40, shipped from Amazon in the USA.
On the other hand, my three-year-old 70-200 Nikon lens suffered communication problems with several Nikon bodies (D70, D200 and D300). Nikon fixed it promptly and shipped it back to me (800kms) for free.
Some days you're the windshield, some days you're the bug.