Stop in for a cup of coffee

Tim and all you other coffee drinkers a question.
I've been killing time (no crime Karl) looking at my other favorite car the 67 GTX.
I'm looking at those cars that are done, nothing really to do to them...no just looking I have no room.
Anyway, why is a 426 Hemi car 20K more than a 440 car?? Cars are all the same condition.
I know Hemi is the biggest, badness, etc..but is it really a 20K difference??