Help with scope value

[Foxtrot]

Im about to sell a Burris Eliminator III.
i have no idea what to ask for it. Its used but in good shape. Any ideas on what I should expect to get?

[Patriot-2000]

I usually go to eBay and take the average of 3 prices and subtract $10-20

[Chase4556]

I usually go to eBay and take the average of 3 prices and subtract $10-20

And I always sorted by recently sold to get an accurate idea of what something was going for.