These sort of emails are all over the internet - I bin them on an almost daily basis. Note it says:
"Please respond to the question on eBay by clicking the button below."
I'd bet that this takes you to an ebay-lookalike website where you'll be asked to log in (possibly with additional bank/credit card/etc. info for 'verification'). If you do, you've just given your username and password to someone else...
If you send the email to ebay, you'll get an automated response and very little else.
oh, and if you look up
rel_ser8 on ebay then he\'s Singapore based, with a feeback of one (based on a
very dodgy looking auction) - and is 'no longer a registered used'. The prosecution rests