Here is an unfinished high end PC that contains the following:

AMD Ryzen 9 9950x CPU
ASUS Proart X870E Creator WiFi Motherboard
Seasonic TX-1600 PSU
Corsair Nautilus AIO with Noctua Fans

As you'll see this comes with the original boxes, except for the AMD Ryzen CPU.

All in very good 'like new' condition.

The only thing required for this PC to get going is RAM, GPU and SSD.

Together these parts retail in the region of £1500