Not to be contrary (well maybe a little)...
160k miles on a 12yr old vehicle would be preferable to say 20-30k miles.
- 160k miles means it's being used regularly and as things break and wear out, they tend to get repaired.
- 20-30k miles means it's likely sitting in a field somewhere for months at a time with rubber parts rotting out, seals drying out, fuel gumming up, etc... Lots of bad things about leaving a vehicle sit for long periods. Expect repairs if you pull it out after sitting for months. This can also apply to appliances (air/con, fridge, furnace, etc...) to varying degrees.
Currently using the 2008 F250 to haul from Michigan to Montana before heading to Alaska in the spring. Just crossed 230k miles after buying at 170k 3yrs back. Did tires, belts and brakes...all regular maintenance stuff...no other major repairs.
If you are looking at small Class C units, you might swing by the shop rather than calling. Even if you tell them the model and size, I'm betting a lot of shops think it's much bigger and they may not have a bay suitable for a 35-40ft MH. What you have is essentially a van (van chassis really) and most shops have no issue working on a van.
Yes, the equivalent repair on a truck will cost more than a sub-compact. That happens new or used.
On additional thought: Since you are new to RVs and you had to ask if this was a good deal...call up an independent mobile RV tech and see if they will to an inspection for a couple hundred bucks and walk you thru the issues. Then when you find what you think is a good deal, make an offer contingent upon an independent inspection. It's not a guarantee they will catch everything but they can screen out a lot of issues having seen many of them. They can also give you an idea of if an issue is repairable and what the cost will be. Make sure to plug it into power and operate every system as part of the inspection.
