I have acquired a Cherry G80-5000 by sheer luck and found out it's apparently at least 200$ worth, if not a lot more. What concerns me is that the price paid for it varies wildly, some sell for 50$, others for over 2,000$. I'm waiting for a PS/2->USB converter to arrive to test both its AT and PS/2 port.
As for criteria that might help with estimating its price:
- QWERTZ layout
- 17 F-keys (all F-keys on the left side)
- no Windows keys
- no num pad
- split mechanism, "legs", extending space bar work
- looks fairly new, has been seldomly used
- doesn't come in a box or with a manual
- FCCID: GDDG80-5000
- Article No.: G80-5000HAADE /07
- Serial No.: G 002116 H22
I'll take a photo soon once I've cleaned it properly.