And therein lies the trick. What's more valuable to one person is not true of everyone.
Perfect example: There's a "restomod" '72 Challenger for sale on eBay right now. I prefer the '72 to the '71, but apparently the builder didn't agree so it's got the earlier grille and taillamp panel. The seller wants $149,995 for it, but in an open auction for the car that ended last night, the winning bid (reserve not met) was only $22,100 after 20 bids.
To the seller, the car's worth $150K. To the interested people actually bidding, it was worth more than an eighth of a million dollars less. To me $22,100 is more than the car's worth, based on terrible attention to detail and obvious corner-cutting throughout (the paint is tragic). Whatever's been invested means nothing, because it's to the owner's personal taste. Clearly that's not for everyone... or in this case, anyone.