Just bought mine - red, manual bog standard 5 door with 23k miles for £19,050. I tried to haggle on the price, but BCA wouldn't budge as they were confident they could sell it for the same money.
I couldn't find anything similar for the price. Would've preferred an S3 with a DSG box, but not worth the £5k or so more. My only regret is not ordering the DSG at outset.
I went to a VWFS BCA auction near Loughborough two months ago and the same cars were selling to traders at £18,700 or thereabouts.