Just about every estate will have some used handbags and evening bags. If you find designer handbags of recent vintage, great! You can sell them online and actually get a good price for them on eBay, Craigslist, or other sites. Nantucket basket purses and evening bags, old or new, usually hold their value. Old ones can be sold to vintage clothing stores.
Apart from those, used handbags have virtually no value. Your best bet is to donate to Goodwill or the equivalent.