TBF there's only one Clio plate worth over a grand and that's CL10 CUP.. After all its a Clio not a Ferrari. As much as I love Lee's plate and would have it on my car, FTW is an abbreviation which will be lost on most people and as a saying will date really quickly as trends change. Similarly RS60 JON is limited to people called John, who own an RS and are 60 so yes you may get that price for it but it'll be up for sale for a long time.
I was approached by a reg company about my plate and they value it at a similar level to Lee's but lets be honest it aint worth that at all, most CL10 plates are worth around £500 at the very most.