I reckon it is possible to sell anything on Ebay and you may just be surprised in what you may get for your motor. Do a search for clios and then have a look at the completed listings on the left hand side, that will give you some ideas on how much.
Yes I have bought cars off ebay.... just advertise it and tell people they have to come and view it before putting in a serious bid. Also remember to put on the advert "This car is advertised elsewhere so I reserve the right to cancel the auction if it sells" - then you can take an offer there and then if someone wants it.