Hi. I am interested in purchasing my first detector. I have done alot and heard alot of good info. on detectors, and have decided on a minelab quattro. The new minelab quattro is going for about $850.00, but I have found one on the internet from a dealer who is selling a minelab quattro for $550.00. It has no warranty, which I expected, but otherwise they say it's in excellent condition. It comes with the standard 10 inch coil and a coil cover. Thank's for any advice. Randy