You don't buy an iMac Pro because you don't need it.
Mere mortals buy a regular iMac. Divide that price by 5 or so. . . starts at $1049 for the low end 21.5" monitor Intel I% 2.3GHz with Turbo Boost up to 3.6GHz, 8GB 2133MHz memory, with a 1TB hard drive, Intel Iris Plus Graphics 640, Two Thunderbolt 3 ports, and a1920-by-1080 sRGB display. Add $200 and boost that to 3.0GHz quad-core Intel Core i5 processor Turbo Boost up to 3.5GHz, Radeon Pro 555 with 2GB video memory, and a Retina 4K 4096-by-2304 P3 display.
The iMac line has all been upgraded with all new processors and new, more powerful graphics. These are shipping next week.
I’d have to really sit down and make comparisons to my present system before I’d do an upgrade. Right now, I have a pretty solid Win-7 machine that does the job for me. My biggest bottleneck is when lightroom starts slowing down. My RAW photo images are huge files.
But a couple of years down the road, maybe...