Actually, I just went back and read your post again. Says unused. If so, I'll trade the 160 rounds for it. Don't want to give up a mag, they all match the furniture on the rifle.
If you figure it at $0.35 / round that puts the ratchet at $87.5. You can buy a brand new for $74.99 at a Northern Tool.
http://www.northerntool.com/shop/tools/product_200381616_200381616