could anyone tell me how old are these discontinued machines and how much a used one is valued what you would pay for one in great shape Minelab American Gold Striker w/ stock 10" DD elliptical coil. Factory Owner's Manual. Ni Cad battery w/AC charger & AA alkaline battery holders.?????????????? are they any good why did they discontinue them ? i live in Oregon i have been told there is alot of hot rocks and iron in the ground here will this machine do well in grants pass Oregon ? PLEASE HELP ME THANK YOU HAVE A GREAT DAY