It was a private sale, which luckily I had the funds to buy at the time while trying to sell my previous vehicle privately - S2000 for which I got £5k too
I managed to aquire a Blobeye '05 WRX with PPP recently for £5k:
I don't plan to mod it beyond its standard spec, but with 260 horses, I find its got plenty of poke for what I need!