I'd say it's not high mileage, its a VW commercial vehicle that has potentially 200k++ miles left or more depending on way its been driven and looked after. I have a 2006 lwb T5 102 ps self conversion that Ive had for 10 years that spent its first few years as the fabled plumbers van so many wouldn't touch as a van to convert as it had 120k plus miles at the time. Its on 182k now and other than some suspension bits, tyres and cambelt change etc its still driving as well as it always has. It just passed its mot again with the tester repeating his annual comment about how good they are.
If it where me I'd check the mot advisory history online, the service history and if all seems sensible get a local mechanic to give it a once over.
It reminds me, I really ought to get around to selling the T5 (been meaning to ever since we bought the T6.... )