If you just got your tax return back, here's a quick way to blow it — and by blow it we mean buy one of the three phones we officially know will be running Windows Mobile 6.5 later this year.

An unlocked HTC Touch Pro 2 is up for auction on eBay. WMPowerUser spied it when it had a "But it now" price of $899, but it looks like it's been relisted and will now see how high the price will go by 11 p.m. EST March 27.

At the time of this writing, the top bid was $475. But before you throw your bid in the ring, do note that while this is an unlocked GSM phone, it only has the 3G radio bands used outside the U.S. So, no AT&T love for this guy. Otherwise, if everything is as advertised, it should work just fine.

So, how much would you pay to be the first on your block with a Touch Pro 2?

Update: And ... the auction's been called off. Can't say that's too surprising.