How much will it cost to fix the unknown problems?
That will determine the value.
I have three, two I gambled that I could fix them at a reasonable expense.
Some fixes get expensive, especially if you send them to Icom.
However they will give you an estimate at a reasonable cost.
Call them ans ask.
Of course you could try to power them up and see what the symptoms are and ask here if anyone has any ideas.
Your questions is how much is this unknown thing worth, condition unknown, repair cost unknown.