$600 firm (will be parting this out and selling on eBay soon since RAM and SSD prices have nearly doubled since originally posting...buy soon if you want it!).
Pickup in Macomb or nearby within 25-mile radius. Comes with a fresh install of Windows 10. It's a beauty (and beautifully chunky: (W) 10.5" x (H) 17.5" x (D) 17.5." Note that it does NOT have a dedicated graphics card but does have integrated graphics that works fine out of the box. Can easily add a GPU with the included cables (including the lit-up "strimer" GPU cable.
Parts list (with the current price when buying new):
LIAN LI O11D MINI-X Black With SP750 (750W) SFX PSU Computer Case -- O11D MINI750-X $170
MSI PRO Z690-A WIFI DDR4 LGA 1700 Intel Z690 SATA 6Gb/s ATX Intel Motherboard $210
G.SKILL Ripjaws V Series 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3600 (PC4 28800) Desktop Memory Model F4-3600C18D-32GVK ~$125
LIAN LI STRIMER PLUS 24 Pins + 8 Pins Addressable RGB Power Extension Cables Combo --Strimer Plus Combo ~$50
Intel - Core i5-12600K Desktop Processor 10 (6P+4E) Cores up to 4.9 GHz Unlocked LGA1700 600 Series Chipset 125W $200
Corsair iCUE SP120 RGB Pro Performance 120mm Triple Fan Kit with Lighting Node Core $90
NZXT Kraken Z63 280mm - RL-KRZ63-01 - AIO RGB CPU Liquid Cooler $200
1TB Corsair m.2 SSD $80