The coin dealer is just a middle man. He down talks your stuff but talks up his.
Feebay sucks because they charge 9% commission plus 3% forced paypal fees. Plus Feebay is unfriendly towards sellers. If some jerk gives you negative feedback, there's virtually no way way of getting rid of it.
The best way is to sell to another private buyer/collector via Craigslist or meeting the buyer through Feebay. That gets rid of the middle man. One can also sell to companies like APMEX. Dealers probably just buy coins off of you and sell them to APMEX anyhow.
Silver will go back up.. based on the recent events in Egypt.. people treat gold like the next reserve currency other than the dollar effectively putting a floor on the recent price drop. If gold goes up, silver will too.