That's a later Hint chip model and it comes with the Voodoo Volts power supply.  I wonder how ambitious the seller is being since it hasn't reached its reserve!  Certainly the "buy it now" price suggests a high reserve.

I think, over the months to come, the Voodoo5 6000 is going to get cheaper.  But at some point in the more distant future the price will probably rise again as 3dfx and their products are seen for the classics they are.

But I don't think anyone should buy a V5 6k as an investment.  They should only buy it to use it! 

I think they were just grabbed by 3dfx employees when the company was sold off.  They hadn't gone into production so these are all pre-production samples.  They are probably near to production standard by the final revisions.  But the drivers are very under-developed and throttle the performance.  But, even so, as can be seen by the benchmarks on Logical Madness' site they are still fast cards.

You're right that it's encouraging that the demand has fallen off.  With the arrival of the Radeon 9700 I expect it will drop even more.  The prices should fall, eventually. 

Hmm...

Too bad the prices are really at 'beyond believe'-Levels