I have a 2004 transit i paid £3500 with 85k on the clock about 2 years ago, nothing has gone wrong with apart from i changed discs and pads and rear shoes.
When i was looking 99% of them were all old builders vans and they were wrecks,i didnt rush in and one came up in warrington so i went over couldnt believe how good it was compared to the ones i looked at,i think it was a market van it had sequins and bits of cotton here and there
Good luck finding one for 1k