That is a main difference in their function or utility, and is seldom stressed.
Higher price is partly due to more R & D, better materials (in optics and body), and greater care in manufacture.
They are (generally) "easier and more relaxing" to a wider range of users with their vision deviating from the norm in many different ways.
I would respectfully disagree with a couple of points here. I find the view no more relaxing or easier through my 10x50SV than I do my Toric 8x42 or a Conquest HD, or Gold Ring HD for that matter. The view is better to my eyes, but not more relaxing or easier to view.
Also, the single highest rate of sample variation I've ever seen come from the Zeiss 85T FL spotters. I've seen and used probably 15 different ones and no two are the same. I wouldn't give you $500 for one, especially after using a Meopta S2 "non alpha".