I am looking for a quick, inexpensive way to post product ads on shopping and classified ad post sites. Free classified sites are good, but may not have much traffic. So I would also be interested in paid sites like PriceGrabber and eBay (already have an account). If you have experience in product ad post sites, I'd be interested in your suggestions for how I go about generating the most sales.
As a benchmark, please quote me on posting 10 different products on 25 sites, 250 posts total. The final project may encompass more. Looking forward to your bids. Thank you.