Are you dead-set on a VW? In rational terms 8K is a lot of money for an 11 year old van. Have a look at how much you could get something like a Trafic for as an example. (I bought a 10 plate Traffic van with 80k on it for £6K a couple of years back)
Having said that, a weekend-only vehicle doesn’t need to be as reliable as a daily-drive I guess.
Don’t just consider T5s of course – my 14 year old T4 was £5K with about 100k on it, and my T3 was less than £2k but it’s slow, leaky and cold ;)