From everything I read, you lose a lot of money if you bring something in for scrap. So I would avoid that route if you can at all do something else.
Etsy is *super* easy, super cheap, and you just list it and forget it. Eventually someone buys it and the money is deposited in your account. So it's quite stress free. That's how I sold my moonstone necklace.
Think about listing the vintage stuff on Etsy to start with. Do just one or two so it's low stress and you can see how it works.