Did a Parkers/Glass price check on mine about a month ago when i was considering selling mine.

Came up about £4k, but cant remember if that was for private or part ex
 
Parkers seems to be quite low really, rarely see Cupras go for their quotes figure. Standard and FSH seem to be the key things for buyers at the moment
 
I've seen quite a few similar to mine for much more than Parkers listed it as. If you are thinking of selling, ignore parkers and see if anyone bites :)