FWIW, I just got another email from him and he wanted $30 for a piece of 11mm thick weighing about 16 oz. Don't really know how this compares with other prices for the stuff but I don't think that it's too expensive for a piece that is about 6.5"x5.5" or so in size. Bob May http://nav.to/bobmay bobmay@nethere.com NEW! http://bobmay.astronomy.net