If we ask the original question differently - "Is a hanger spot w/ fuel at the airport worth more than a hanger spot w/o fuel?" Then I'd say yes, everything else being equal, but maybe not much. Just because of convenience. This sounds a little bit like the hanger across the street question.
I don't own a plane, but if I did, I'd put having a hanger, compared to tie down, as more valuable than on-site fuel. Best thing would be a hanger w/ an FBO that would tow it out and fuel it up while I drive to the airport, but that's not going to be as inexpensive as self fuel.