In a new Reuters report about web sales of Black Friday some interesting numbers from eBay are mentioned regarding Wii and PS3 auctions.

For starters eBay had the most traffic last Friday of all online retailers (7.5 million unique visitors).
From November 17th to November 24th 14,675 Sony PS3 consoles have changed hands for an average price of $1,186.63.
In comparison the Nintendo Wii sold 26,708 times from 19th-24th of November on eBay. The average price for the Wii was $412.

eBay is clearly benefiting big time from the limited supply of the new video game consoles.
If you need to find a Wii or PS3 here is a list of online stores that might get it in stock.