Less than meets the eye!
Chris,
Just because a dryer doesn't get hot does not mean it has a bad element. As you know, it can be a bad thermostat, a broken wire or a bad thermal fuse. All these items need to be checked before buying a new element.
Also, someone may say it doesn't heat, but they could have had the dryer hooked up to a clogged vent which would make the element shut off due to overheating.
The dryer looks well used but they do last forever.
Pick it up since you can't go wrong on the price and see what you can find and then go from there.