If it helps, I bought my '94 200tdi, 130k for £3,000, bulkhead rotten at the top, needed new chassis and any place you'd expect to find rot then it was there, though fantastic engine and mechanically sound. I learnt that the initial outlay isn't where the money goes, it's the new swivel, alternator, wiper motor, chassis, bulkhead repair, the list goes on for us all. If you spend 6k then budget to spend another 5k, now look what 11 will get you.
.... having said that, with the exception of replacing the alpine window seals, I've loved every moment of sorting mine out.