How to value a used NEF

[jon lynn]

A guy I used to work with has a couple NEF's for sale, one is a .243 with scope bases. But he wants me to make an offer, he will not give a price.

So under a best case conditions, what would be a price range? I now it is about 8 years old. And it is very clean, the condition is not in question, just the bid I should throw out there.