2013 NC with BBR Turbocharger

Has anyone else seen the advert on Auto Trader for a lovely-looking 2013 NC automatic, fitted with BBR Turbocharger ? The asking price, £7,990, to me seems very cheap, yet in the photographs, the car looks immaculate.
I wonder if the likelihood of high running costs is putting prospective buyers off - it’s been advertised on the site for months !

Have just read the description. Cat S repaired, blowing exhaust [aparently a specialist job] and needs a new front bumper after a pheasant strike. So it’s a modified car with faults requiring probably £1500 worth of work [£500 for a bumper, £250 to get it sprayed plus fitting and then the exhaust work which if it needs specialist attention probably means a new manifold]

And it’s an auto, Lots of people will exclude them in their searches