I'm not a metal detector guy, but I ran across an ad on a Facebook buy/sell group for a guy that wanted to sell his metal detector for $20. I quickly let him know I was interested and wanted to take a look. I checked it out best I could, and bought it for $20. The manager of the storage place I rent from is into metal detecting, so I got him to check it out the next day. He said it was good to go, and I sold it a few hours later for $105. A very quick and easy $85 profit.
Bounty Hunter Pioneer 505 Metal Detector | eBay
Bounty Hunter Pioneer 505 Metal Detector | eBay