sure, my 8600k was 199, mobo was 120ish, ram was 200 cause i wanted 64gb of ram, gtx 1080 costed me 600 at the time, sold it for 650 during the mining boom, then got the rtx 2080 for 800, and most recently got a 3080 for 800, threw the 2080 into a media box for living room. all in all with case(50 bucks) psu(60 bucks) samsung 980 nvme 1tb (80 bucks)and other miscellaneous parts i would say around 600 bucks without GPU, reason i'm leaving gpu out of equation cause i wanna give a base figure that does not need to be replaced anytime soon, now if you factor in gpu cost that literally doubles in performance every generation. the overall cost is around 2k for the past 6 years.
since we are discussing gaming here, i'm going to use gaming as the applied method of usage.
upgrading to the next generation everytime a new platform comes out is not a more viable solution, in fact the opposite, if you swap platform every new gen comes out you have to reinstall windows, rip out the entire board, re-doing the wiring harness. all that for marginal 10-15% marginal gain on the ipc. the way you handle upgrading your pc is definitely not the norm in the pc building community.