FireFox users will get the "Basic" Editor. HTML can be used in the fields, but these are without added HTML. I did not use the Feedback or Auction Fields.
There are three layout options - the gray square is the photo and the open box is the feedback/auction area.
I am not impressed with the results.
Feedback/Auctions will append full-width across the bottom.
Feedback/Auctions go in the empty right-column. This layout is no good without feedback.
Feedback appends to the bottom and the right columnn still looks funky.
In these shots, I cut the image down from 400x300 to 200x150 and added the feedback/listings. Basically, the reality doesn't match the mockup layouts very well.
The resulting three layouts from the enhanced editor.
I abandoned the middle layout because the only choice there is to use the auction/feedback tables. Then I highlighted the table structure of the other two so we could see if there could be any way to make something good looking out of eBay's form.