In all Honesty, but in being Devil's Advocate:
Only logical reason could be that the fridge needs to be more "deluxe" in that one would like more drawers, bins 'n' shelves--particularly one in the freezer; remember my small GE in the apartment--but the lack of was sometimes fun "stacking", as long as everything didn't fall out... And perhaps, larger capacity...
The dishwasher obviously looks like it doesn't do more than dishes, silverware & maybe utensils, too--so something to also wash pots & pans!
As for the range, the coil top elements have long given way for the (let's face it) more desirable smooth-top, right down to even a classic range being less desirable, as ceramic tops have come a long-way towards improvements in heating better and being sort of easier to keep clean... But the coil-tops are still lamented and missed... I've had three 6" and one 8" and found myself as able to easily utilize as most do w/ two + two, of each...
Surely the simpler automatic baking and the self-cleaning are what you praise this range for having especially compared to today's products, both give much more better results, as does the baking and broiling...
Otherwise, I wish the seller good luck as I do the buyer; that one Harvest Gold fan out there, should surely still be easy to come by...
-- Dave