If both sets of glass are in identical condition then there really isn't much value difference. The green tint on the Sof-Ray glass isn't much of a sun or heat block. If you get anything you want in addition to the glass you will be coming out okay. Since your willing to trade the glass must be an item you don't need and he does. If he is offering the other stuff and you need or want it I would say you are both getting a fair deal.