Go to RVtrader and look up used prices. The only ones that are worth more than new are the old classic collector ones. I can find 100's of AS built in 06-17 worth way less than new.
Does that make them better or worse? No it just shows that they depreciate like the rest. Maybe slower depreciation but they don't hold their value like some think they do. Factor in interest if you're getting a loan and it's even worse cause you're paying more in interest because the purchase price is higher.
Do I think they're built better. Yes. I've watched a couple 1 hour walk thru videos on several and there's more than meets the eye.
Is a 19' Bambi Tommy Bahama worth $81K? Heck no.