That's a specious argument. Most gasoline powered cars today will be performing as good as new at 100k miles with minimal attention beyond regular oil changes and a new set of spark plugs -- certainly, you don't need a complete motor replacement that early in. Likewise, any car with 100k miles, EV or not, will have a pretty worn interior, need a new suspension, be showing wear on its paint, have very out of date electronics and safety features, and be out of fashion style-wise (and yes, that matters when it comes to price. Just ask the designers of the Pontiac Aztek).