Might try checking out eBay, may be a spot to sell a few of the nicer ones. The dogs here on ourside just don't seem to have the hide quality or colors that are popular in the fur trade, so they just don't sell as well (or sometimes just don't sell at all) as say a Montana/Alberta coyote, with a nice white belly full of fur.
But I do see some selling on eBay, but its hit & miss. A good source for information on the fur market is the magazine Fur-Fish & Game. In addition to hunting & fishing articles, they also have articles on fur trapping and the fur market and how well things are moving or expected to move.
Good luck with that, hope this helps you some, and you can manage to pick up a few dollars for some of those critters, but don't let that stop you from getting out there and busting some yotes...Good luck!!