In cleaning out my storage locker I found four of these. Hate to throw away if someone, somehow can use them. They're free and will fit in a medium USPS flat rate box. Send me a pm if you are willing to go the $10.50 for the postage. As far as I know they all work as well as a 500 ever did.
I'll throw them out over the weekend if I don't hear from someone before that.