I wouldn't do it. An opened Jerry isn't worth 5 Blue Friars decks in terms of market value. Like you said, each Friars deck is worth $30-$40, so multiply that by 5 and you're looking at $150-$200. Is an opened Jerry worth $150? You'd be hard pressed to find someone who would spend $150 on an opened Jerry with warped cards and a destroyed box, so trading for it doesn't make much sense either, in my opinion. Alas, the decision is ultimately yours, but I think you could find a better deal for a Jerry elsewhere with a bit of searching.