I bought my father-in-law a cheat Chinese e-bike for $1400 last year, he's in his late 70's, 5'2, 110 lb max., takes the e-bike to go to the local store, fishing about 2 miles away. His cycling radius is about 4-5 miles from home maximum, mostly just do loops in neighborhood with minimal car traffic flow, all pavement, somewhat hilly terrain.
Fat tires make the e-bike heavier than need be, but does provide extra comfort & stability for the elderly that may be less steady on controls.
I put about 25-30 miles on the e-bike before handing it off to F-I-L, battery was down to about 2/3, I used mostly PAS at low level, I suspect that F-I-L use mostly with thumb throttle only to propel forward.
