Ebay has a glut of listings at moment. Not sure they need them. searching my brand catagories returns double the results it did not that long ago.

It also means if you are halfway down search returns and they get double the listings you go from say page 10 out of 20, to 20 out of 40, maybe worse if new listings get a boost. (A bit of an extreme example but you get the idea)

I have a feeling they are also pushing auctions and quick turn around listings rather than padding store BINs.

A few free auctions for store owners would be good though