I have a 20 yr old Greenlee circuit seeker purchased for about $400. It still works but need a second one for my employee. I was hoping an electronic item like that would have gone down in price. Mistaken! Ideal brand is even higher than Greenlee. I saw a new Mastech brand on eBay for $149. Anyone know about this brand ? ( Ideal brand starts at about $800. ). Any recommendations? Trying to save money. We need one to find cables in walls and buried cables. Thank you.