CounterOffer is an eBay Best Offers tool which sits in your system tray and quietly checks your ebay accounts for incoming offers.
When they do CounterOffer kicks in. Rather then having to manually enter
amounts into eBays site for each of your auctions, with CounterOffer you can specify a single minimum acceptable percentage rate that will apply your auctions. You can specify as many rates as you like based on auction titles or even keywords.
Using Merlin CounterOffer to quickly and automatically respond to offers can raise sales by 30% or more over processing the offers manually.
15 day free trial for Windows.
This current version of this program requires the .net framework 2.0, available free