Best Buy in the US is not selling the TouchPad at fire sale prices, but they are offering a full refund for TouchPads and accessories purchased from their store or website. If you purchased these items in the past 60 days (which you did, since the tablet hasn't even been on the market 60 days), you can get a full refund.
I just did so, no questions asked. My 16 gig HP TouchPad was tossed in a small pile with other returned TouchPads and accessories at my local Best Buy's return counter. Much as I liked the tablet, I didn't like paying $500 for a dead end product, and I saw little value in keeping it for site coverage (there will likely be no major updates or accessories added to the hardware ecosystem.
Best Buy's return policy statement for the HP TouchPad and TouchPad accessories