Private plate question
Hi,
I've seen a private plate i want to buy from ebay, the ebay desription says currently held on retention certificate, at present i haven't a car to put the plate on, so if i buy the plate will i have fees to pay on top of the ebay auction price as i want to keep the plate for a few months/year till i get a car to put it on
Any info welcomed as i know f*all about private plates
Thanks