That Maytag is a tank. No telling how long it would run without a drop of oil in it.
The console appears well used. The ink in the Hot water button is like new. The Cold water button and that side of the console is more worn.
The Delicate speed button appears more worn than the others.
The Small,Medium and Regular water level buttons much more worn than the Large.
Makes me think of a single person,possibly elderly, who regularly washes smaller loads and does so in Cold water on Gentle speeds. The cold water issue is a red flag for me. So I would be looking for gunk in hidden areas.
Sadly, it may be a chore to get the agitator off, and remove the inner tub to check the outer tub.
If the enamel is worn thin on the lower third of the inner tub, you know it's either high mileage or they washed a lot of bibs and jeans with all those metal buttons, buckles and zippers.
I would tilt the machine back and look underneath. I would take a Phillips head screwdriver and take the front panel off. Check for excessive oil issues. Maytags love to sling a bit of oil, even when they were new. However if a pint or so of old oil is all over the insides you might want to pass.
Changing the belts is easy.
In my mind the most difficult issues would be a leaky tub issue, a bad tranny that needs a rebuild and of course if you can't get the agitator off easily you will have to destroy it and get another one.
Anyway, that Whirly machine may have issues, too. I just got an old '55 Kenmore up and running and it was a lot of work. Hidden rusty center post damage, bad basket drive, tranny troubles, etc.
It's all a throw of the dice, however, if you look for the signs, you may be able to figure out which is the least risk.
Just some thoughts.
