I refurbish and sell preowned mopeds. You can check out my site if you like. www.zippymoped.homestead.com. I am in California but I have sold and shipped all over the U.S. I specialize mainly in Vespas and Puchs.
You can also check the motorcycle section of Traderonline.com. They list mopeds by state and region.
Good luck and Happy Trails