I recently found two full boxes of Eclipse Plastic-Hulled 7 1/2 12 gauge shells. Interesting looking stuff and apparently safe to shoot according to the net (less so in semiautomatic guns). I've never seen or heard of it before; it can't be re-loadable, can it? But does it have any value to collectors? I have a friend who wants to buy a box of it off me, what the hell would I ask for it?