Depends how much you want to get for them. I buy and sell tons of packets, both on
ebay and through sellers that advertise in the Linn's classifieds. If you're OK with packaging random lots of 100 or so stamps at a few cents a stamp, there are plenty of buyers for stuff like that. You won't sell all of them in a day, but you can put up some fixed priced, multiple quantity listings for whatever you think is fair and just let them sit. If it's a good deal, you'll eventually get enough buyers and get rid of some stamps. You can also make up some country lots if you have a lot of stamps from particular countries. Again, you probably won't get more than a few cents apiece for common material, but it's a few cents more than you're getting for them now.