the price of silver has pushed a lot of grades to melt value > collector value. this is only going to get worse especially if silver doubles this year like people are predicting.
i am not a fan of melting coins of any grade (not everyone can afford UNC/MS and for every one that gets melted is one less that can be collected) but you might be able to thin the herd substantially by starting with a melt bucket.
melting is an option but you would be paying refining fees. in large volume I think it works out to about the same as
ebay or auction fees but you have to be dealing in large volume. but at the end of the day you end up with .999 silver bars that can be converted to cash at any time (or easily stored long term as an investment)
you might want to consider trading with forum members. no commisions/fees, just shipping. everybody wins.
really good site for looking stuff up is numista.com , you can search by diameter, metal content, weight etc. the site doesn't give values but does give mintage #s. you can also export your collection to excel and pass the list around online.
good luck!