Has anyone sold a Chanel bag with Sotheby's or Christie's? I'd like to know if one is better than the other, or general experiences. I tried to sell a bag on the online portal (for a fixed price set by Sotheby's after authenticating), and they instead decided to sell it in their 'salon'. However, after four months it still hasn't sold and they now say that UK-based bags can't be sold online. So I'm considering trying my luck with Christie's instead. I prefer a recognised auction house as I feel they're more credible and they do all the legwork.