Some folks just prefer the simplicity of electricity and don't mind paying for sites that provide it. My mother was like that: 30 years of all-electric solo RV travel. Different strokes.
Since it still has the 2-way
fridge,
furnace, and (I'm guessing) water heater, it would be fairly easy to restore
propane operation. Is the cooktop still available?
Best wishes on the sale! For the right person this is a nice trailer at a very good price.