Selling sets of china I would think would be best at a consignment store, or Antique mall if you are in a large city. Other then that I would say you have a challange. What kind of china sets do you have? Are they maybe good enough for a Auction house? Ebay would have the traffic but the shipping would be a nightmare. Craigslist would be slow to get hits and then you have strangers coming over looking for a cheap deal, and glassware buyers are really picky and would try and talk you down if it had a chip. then they would probably just try and split the set for money. Consignment and Antique mall would be most likey to find a good home for a set.