This deserves its own thread. Amongst the treasures I have had was
a) a buyer from Austria who wanted a £0.50p refund on the postage because I had "overcharged him" (I had charged him the exact cost plus 50p for the envelope). He'd gone to the trouble of checking it on the website and demanding the difference.
b) people who've sent things back six months later saying they "no longer needed it, can I have a refund" ?
c) People who have complained about the condition of items when it matches the exact description (that they haven't read).
d) the usual scamsters who say they want to send me a cheque for £100 more than the item is worth, can I transfer the £100 to this account please ?
e) people bidding on items from countries where I have restricted bidding from, after numerous bad experiences
f) people you just KNOW are going to be dodgy wanting to trade off Ebay/Amazon
g) "Can I come and collect it?" Pt 1 "Yes, surely" "Er, actually, can you meet me half way, in Luton?" "No"
h) "Can I come and collect it?" Pt 2 "Yes, surely" Pops round - "Actually, there's no way that's worth £30 (which is what you bid), I will give you a tenner for it". "Nein danke"
i) From Germany, of all places "First you send me the goods. Then, if I like them, I will pay". Er, I fear you don't actually understand how Ebay works.