Question Please help with Sales Pricing on 2 PCs

[ToolPunkXS]

Let me know if you guys have any idea on what I should price these PCs @ Please! I can't find a website to get any ideas. Let me know if you need anymore info for either PC. Thank you much!! and obviously they are used...

PC#1
OS: Windows 11 Pro
Case: Fractal Design Focus G ATX MidT
PSU: Corsair CX 650
CPU: i5 6600k
GPU: AMD RX 570 8GB
RAM: 16GB DDR4 2600
MoBo: ASrock z170 Fatal1ty K6
SSD: WD 500GB NVMe
HDD: WD Blue 1TB
CPU Fan: Intel Stock
Case Fans: x5 120mm LED (BLUE)

PC#2
OS: Windows 11 Pro
Case: Fractal Design Focus G ATX MidT
PSU: Corsair CX 650
CPU: i5 9400f
GPU: Nvidia GTX 1060 6GB
RAM: 16GB DDR4 3200
MoBo: GIGABYTE GA-B85M-DS3H
SSD: Samsung EVO 500GB
HDD: WD Blue 1TB
CPU Fan: Intel Stock
Case Fans: x5 120mm LED (RED)