A sticky would resolve this. Instead of a handful of threads that each feature one or two sales, this would limit to exactly one line on the screen. It's a pretty reasonable return on attention invested.

Me, I like the eBay links. I'm not looking to buy anything but I like to look. I also like to read the descriptions. So you're proposing that we should post the photos (of which there are often half a dozen) as well as the text of the ad? Why not just let people link to eBay?

It's like the Fixed Gear Gallery only someone happens to be selling that particular bicycle. I really don't care, I just want to covet my neighbor's goodies.