Let's say that car would be priced at £30k by a dealer. What would they typically pay for a car with that retail value?
I'd want it under £20k that's to allow for any work which as we know on these cars can massively eat into the budget.
£1200 for a warranty minimum
£2.5k for a clutch (most dealers worth their salt will put a new clutch in regardless of wear factor which is unreliable)
£1.5k for a service (see above applies)
£800 for paintwork, most cars needs at least some paint and or a decent detail.
That's best part of £6k already and these cars aren't an easy sell unless priced right.