Rifle Scopes need your opinion on falcon menace 10x40 mp20 ret

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i need your opinion on its resale value, i wanna sell mine but cannot remember what i paied for it i have the box and all the factory things such as caps and sunshade ect, it has no ring marks looks mint

i cannot find what they go for new any where so i though maybe some one would tell me what they would be worth used, i was guessing about 300 ish