If you run 10 frames, you get about 1 pound of wax for every 100 pounds of honey harvested.
If you run 8 frames in your 10 frame honey super, you will get about 2 pounds of wax for every 100 pounds of honey.
It also depends on if every frame is fully capped, or if you have a lot of open honey that isn't capped off yet.
In a 10 frame medium, you will probably get 5 or 6 ounces of wax. You might get a little more, and you might get a little less.