Value of Springfield 6-20x56 mil dot scope?

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Not sure if I am posting this in the right place, sorry if i am not. I am reseaching the current market value of a Springfield 6-20x56 mil dot scope. It has never been mounted. Box included. Since this scope is no longer made, I have seen references of it selling from $700 to $1200. Does anyone have any suggestions on current value, recent similar scope sales, potential interested resalers, or any other guidance?

Thanks for helping a newbie.