Don't know about Lockerz, Points2Shop will ship to the US, UK, and Canada. I haven't actually ordered anything from P2S yet (phone number required to verify account), but they seem to be legit. It's a "do offers for cash" site, most of which require a credit card, but they also have flash games you can gamble points on (against other members). You can buy pretty much anything listed on Amazon.

points2shop.com (or, if you'd like to get me some extra points as a referral: http://www.points2shop.com/?ref=uin1250556005 )

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