I'm shocked at how much TDI Sport's have dropped in price, you can buy them very cheaply now ... I found one almost identical to mines (Was black) for £3800 ... 03 Reg with less miles too.
I paid £6,500 for mines in 2006 and have done 45K in it so far... four months ago when I was considering selling I got offered £5,000 and thought that was poor... I think I'd get less now (Even if the mileage was the same) ... that's why I've kept it and sorting out a few things that'll make me keep it for longer.