I looked in the completed auctions on gunbroker. One silver one sold for $375.00 on 2/13/2012, another one (blue with base & rings) sold for $316.00 on 2/11/2012. FWIW, Bud's is currently selling this model NIB for $549.99.
A few that were listed at lower prices got no bids.
If you use an online auction, be prepared to wait for a few weeks or months for a sale, until a buyer comes along. Gunbroker does not charge for listing or relisting items, and you can set your auction to automatically relist if the item doesn't sell.