Well I will join in here and provide some pricing that I have just paid to upgrade my 7 year old system, all prices are likely to go down if we get the supply line running right again.
I am upgrading to a Gen12 i9 12900K, it is running about ($613) right now. We (my son and I are both upgrading mine because of age and his because of CPU meltdown when liquid cooling system failed). He has gotten an Asus Z590 MB and just ordered a Gen 11, i9 11900K, he is taking the DDR4 from my old machine 32 Gig, and looking at a 3070 card if he can find one. I am changing out an MSI Carbon Pro Z390, with a i9 9900, guess it is not as old as I thought with an Asus Z690 Strix E Motherboard ($469), DDR5 5600 G.Skill Ram ($449), Replacing the 1080 Founders Card with a Asus 3080 10Gig card ($1409 for the 3080 card and the 590 Motherboard ($359), AIO Asus 360 Liquid Cooling CPU unit ($230), the 590 Strix E Board has 4 M.2 slots, while the Z690 Strix Board has 3 M.2 on the board and 2 additional on the Asus M.2 Card. These should get us through the next 7-10 years. So approx total so far about 3100 for both machines. I am still to stubborn to not build my own machine, been doing it for just over 40 years....