How about some sort of banner on the front page showing items that have recently sold via Price Charting?
That way we can see what items are selling, how they are priced, etc.
We don't have a banner, but the sold data is available on the site for anyone to see and filter and sort:
You can navigate there by clicking 'newest listings' in the menu and then changing the 'status' drop down to 'sold'.
Customer support service by UserEcho