It depends a lot on condition. Honestly not as much as I thought they would. I mean MG34 and MG42 scopes bring very good money but there are not many MG08s around and those that are mostly have scopes already. I have seen them from $50 to $500 but I have not seen that many sell... Pictures would help.
I have been slowly putting together a MG08 parts kit so I might be a little interested if you want to sell it. Then I would just need to get the scope rail that goes on the side of the MG08
Right now I have the recoil plates, top cover, barrel, booster, and feedblock. Now I just need a waterjacket, spade grips, trigger bar, lock, scope mount, and bottom and side plates.