FWIW & IMHO:
The one with the most miles on it is baxically a bargin compared to the other one. The motor compartment on the one with the most miles appears to be considerably cleaner. Also, the one with the most miles would seem to be not so much of a risk regarding dry rot, overall cleanliness, and generally functioning of everything. When these cars sit for long periods of time without attention they don't seem to like it. Paint goes to hell, all of the rubber seals can develop problems such as leaks.
Seems to me those prices should be reversed. Just my $.02 worth. The low mileage one seems to already have that problem on the bracket that holds the power steering resevoir, although that might be surface rust/corrosion only. You can see that the one with the most miles was not neglected. The other one, well...............