The sale went through without any hitches, and I had another happy buyer. But it did get me thinking that I should perhaps take more precautions. Online coin dealers/sellers, how do you protect yourself from scammers on 3rd party platforms like eBay or your own websites? And have you been scammed before, whether via a chargeback, 'item not as described' case or something else? Ship everything via Registered Mail, buy private insurance, sign up for a business insurance plan, vet buyers? Curious what best practices are here.