WTK - Value of a H&R USMC model 58

In excellent condition. I have come across one and have no feel for what its worth. All correct and unmolested in supurb condition. It is absolutely as you would expect it to be.

I tried a search and looked at auction sites but do not see any that sold.

Any help is appreciated. I want to make a fair offer and don't want to underpay or overpay.

Thanks,
Ernie