Number 6, is the best design. However the movie has to go. As cool as it is to have it in the listing, most users computers won't be able to handle it. The movie will cost you in the end.
Number 20, a lot like #2 but with better defined headers and text. Some cool movie pics would be neat but aren't needed.
The rest were all very nice. However some were too simplistic and well, boring. Some were too vague as well. Some sellers feedback would keep me from buying from them no matter how gorgeous and professional there listing appeared.
My .02 cents.
