I put a 30 day listing on eBay last year, for $150 I think. I got a lot of traffic,lots of phone calls, and lots of email. I got 3 offers on the property. (they all fell through for various reasons)
I sold the property eventually, but not because of my eBay ad.
I would do it again, but I havent yet.
Good luck and let me know how it works for you.