I'm not sure where BC Guy got that price from, but if it's accurate, I see some cheaper camper vans in your area that have a better layout to what I'd want. I could sleep on the sofa of one where it's behind the drivers seat without pulling it out into a full bed...
I certainly wouldn't spend that kind of money on something with the plan to modify it. For that kind of money it better be perfect as is with no modifications needed or required.
Floorplan and storage are very important in how comfortable the van will be to live in. You can probably only get a feel for this in person. Many of the pre-made camper vans seem terribly cramped to me. This is one of many reasons that I usually choose to build my own.
Look at the systems, especially the holding tank dump system. While some can be simple and easy, some can be a very big problem to dump. Some require you to get down on your hands and knees to dump them. This can be very unpleasant in wet weather, and also at filthy dump stations.
All camper vans are not created equally. Some are designed to always have shore power available, others might be better designed for boon docking with a house battery that is charged while driving. Does it have a generator? If it doesn't, is there a good place to store one inside?
Those windows don't look very rain friendly... Will that be an issue?
Is that one of those engines that likes to spit spark plugs?
For anything newer than about a '90, that's getting real close to the mileage where they start costing a lot in repairs. Are you prepared financially for that possibility?
Is this a private party sale or a dealer sale? I have heard some bad stories about dealers pressure washing the cabs and even the cabins on some rigs, and horrible dash electronics failures following a little while down the road. Sometimes dealers use pressure washers to clean the carpets too. This can result in a horrible soggy mess out of sight, and out of mind, of potential buyers.
Try to do a carfax or the equivalent on it. I'm not too sure how much I really trust them, but it can't hurt. Has it had more than one owner in the last 5 years? Two or more owners in a 5 year period could mean it has hidden problems.
The higher the price tag, the more due diligence I would perform on it. Don't forget to keep a sizable emergency fund too.
Happy Hunting!