Sold some rare coins on eBay and the buyer wants me to send them to his mums house as he says his is a building site? My first instinct is this is a scam, either he'll claim they didn't arrive, wrong address, chargeback down the line etc. Even though they are being sent special delivery and are insured should I just say I will only post to the registered address as it's almost £800 of coins! This is the first time this has happened to me and I would really appreciate any advice from anybody this has happened to or has an opinion on. Thanks in advance.