even if it was only 1000$ I doubt you'd see many mechanics buying them. You just dont do much work on jack stands these days.
I work in a shop with 8 techs, and we have 0 creepers.
I've worked in a few shops, and uhm, out of 5 shops, I can remember 2 guys that had creepers. And I don't recall either of them ever using them.
I have 3 creepers at my house, and none of my vehicles will get high enough off the ground to make them useful (on jack stands anyways) That with the jackstands at a maximum safe height, and on all 4 corners.
They just don't work.
Now if my truck was a bit higher, it would be useful. But I guess ground clearance on modern vehicles isn't what it used to be.