This is a very deep machine, I paid $300.00 used. The plug from a head phone flops around in the jack hole, so that needs replacing. It has rechargeable batteries, and the charger I was given does not connect...Batteries are virtually dead..I thought about having someone put on a 12 volt battery pack for me. I used it twice on a well hunted tall grass area, first time , gave up on the Lesche digger, and went for a shovel...Shotgun brass at a foot down wears you out. I am not an electronics person so anything I want done, I pay for. My camera needs batteries since the front does not open..I believe the 750 is the deepest going, and was told that by someone who had one in Europe. My price, gives you plenty of wiggle room if you want to buy and turn over..Pay Pay is fine, if you want to send a gift, gold pieces are nice...I, also, lost access to a site that this machine was probably made for, a Hopewell Village area, and 2000 year old copper...If you are interested,am going up town and can send you pictures later tonight.