Gotsmart, there are several serious flaws with this analysis. First, regardless of what any "value" guide places on mileage, there is a mountain of evidence from members here that mileage, specifically LOW mileage is a key factor in determining value. Second, unless you are in the process of being bambozzled by a salesman, adding options in an attempt to inflate the "value" of a used rig is simply a delusion. Dealers, banks, and knowledgeable buyers couldn't care how the rig is equipped, unless it is missing a key item, such as a genny, AWNING, or AC. The "options" you list in an attempt to inflate the value are known in the industry as "standard run" items and appear in the vast majority of units rolling off the line, they have ZERO added value. Second, you have gone to the extreme of inflating the price with options that aren't even real, a driver's door on a van chassis, smoke detector, LP detector, cruise, power windows. All either standard build from the chassis manufacturer, or required by law. Finally, Winnytrey should be commended for a rational review of why a thoroughly used rental is NOT A great deal, if viewed rationally. I have previously discussed my experience with an exceptionally worn, poorly maintained rig that CA has no issues with renting me, when in fact it should of never left the lot. Couple that experience with watching clueless foreign tourists beating the******out of these things, and the obvious fact that C.A sells these things with extraordinarily high mileage, AFTER they have served their useful lifespan, and I only have one thought. If you're happy, that's what matters. If I found one priced at a significant discount compared to a privately held, low mileage properly equipped unit (slide, awning, etc..) it might make sense, but not a worn out eight year old rig, with 100K miles for that price.
EDIT: After reviewing your NADA link, I found the real world value that most experience members here would be negotiating from, when buying a similar, non-rental rig. The "option free" low retail is $21,500, not the nearly $26K "value" you created. IF the rig was privately owned, in great condition, and had six new tires installed, the fair value would be the $21.5K. Once you factor in the fact that this rig has been flogged for the last eight years, by hundreds of inexperienced users, IMHO $21.5K wouldn't be coming out of my wallet anytime soon. I'm sure that there are plenty of happy owners of retired C.A rigs, but thinking that this particular example is worth much more than mid to high teens is wishful thinking.