All but three of my' eleven Metal Detectors were purchased from Sellers advertising on Craigslist and I got each one at a steal. If you check out Ads on local and nearby Craigslist sites daily or every other day, you will eventually come across an Ad for a great Metal detector at a low price. The key is to call or email right away, arrange a meet in a public place, check out and test the metal detector and if everything is good, then pay the Seller. Never meet at an unknown location where there is no one else around because you never know if the Seller is okay or not. If you meet in a public place, there is less likelihood of being ripped off. Before the meet with the Seller, do a "Review" search on the Metal Detector that you are going to look at. This will give you some good information on the quality of the Metal Detector and maybe some information on its capabilities. Of the three Metal Detectors that I did not purchase off Craigslist, two were purchased from Pawn Shops and one was purchased from a Charter Member on TNnet.
Good luck!
Frank