Having owned both an 86 vanagon westy and a 92 eurovan westy I have my opinions about both.
The 89s are the last year of the Vanagon and definitely the best. It may or may not have a/c and cruise, originally not even available on the Vanagon. Make sure the fridge turns on easily, they're propane powered and a pain to get working properly. Have a look at the engine, its a boxer engine which means the headgaskets love to leak. Use a coolant conditioner on all coolant flushes to make the HG last. The vanagons are slow, bad on gas but they're badass and everyone loves them. I would say someone could ask $15 000 for a van like that but at the end of the day you'd probably end up with $8k to 10K in your pocket. In my opinion, they aren't worth anymore than 10K just because for a few more grand you could probably find a Eurovan which is much more road and service friendly.
Road trips are amazing with these things. I got denied access into the US last year because they were too lazy to complete some needed paperwork at 11:30 at night, they sent me back, I literally parked and camped in the border crossing parking lot overnight. Having a car that you can park down town and pop the top to sleep in is the best!
Good luck
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