Charisma? Dunno, but year for year, mile for mile, and condition for condition, a 240 is worth more than a more modern and better 700/900 series car.

Sort of an extreme example, not that applicable, but consider a 2009 Ferrari 430 vs something like a 1965 250 GTO. In pretty much any measurement you could make, the 2009 car is faster, more dependable, smoother, more efficient, etc, etc, etc. And yet the old thing is worth 10 times what the new one is.

'Worth' is a very fickle thing.
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'63 PV544 rat rod, '93 Classic #1141 245 +t