in hindsight I think I would buy 2-3 years old next time, cars taking a beating in price after 3 years.
Unless I were ordering the exact vehicle I wanted (and that based on specific experience) buying after major depreciation is past is the way to go, especially when starting out.
I bought my pickup (signature) at three years. High miles, with 2WD, manual transmission and long bed. Just over one-half the original MSRP. Depreciation has been very, very low in the interim. My cost-per-mile has been quite low overall as it has met the goals of longevity, reliability and low fuel burn per mile while being able to do a high amount of work (payload + towing).
When looking at RV's -- no matter the type -- the cost calculations come down to the per night aboard expenditure. If one is aboard 50 nights per year over 7-years, then enter the cost of both vehicles original purchase price into that. Figure depreciation on both, and adjust to the higher cpn. Then one can enter any and all other costs as seem reasonable. (Obviously, the greater the use, the lower the major costs contained in the cpn. This also means ownership past the mean of 5-7 years).
The depreciation of two new vehicles (TT & TV) can be quite high, but if one (preferably both) are fairly new yet past initial depreciation, then the cpn looks much, much better (if economy is a genuine concern).
There are threads around here about the daily and monthly costs of full-time RV'ng which may be of help in seeing the overall cost of living/travelling this way. Any real economy is within vehicle specifications and their intial price plus finance charges, depreciation and any possible loss of investment income. The fixed + variable costs past that (taxes, insurance, camping fees, fuel, etc) are somewhat subject to owner influence.
Just buying brand-new off of the lot carries penalties that ought to be examined (mainly about useage over time, not so much about miles).
1990 35' Silver Streak Sterling
; 9k GVWR.
2004 DODGE Cummins 305/555; 6-manual; 9k GVWR.
Hensley Arrow. 10-cpm solo, 18-cpm towing
Sold: Silver Streak Model 3411