Please stop sniping at each other......
I look at it differently, I don't look at the cost of my detector I spent as lost money since I can get most of my money back on resale..... I find gold with my detectors, I never caught a fish worth several hundred dollars but found lot of rings that are worth it and every time I hunt there is the chance of finding something worth 10 times that. Never caught a fish with history in its belly, but found history when I dirt hunt...
There are plenty of hobbies that only cost with no financial return back, golf and fishing come to mind. I had several friends who called their boats "holes in the water they pour money in to"....Even with out a boat I spent a fair amount of money fishing. Golf is another hobby that costs lost of money with no financial return for 95% of the people playing......
Doesn't matter what it cost if you enjoy doing it, life is short... Minelab GPZ 7000 cost $10,000, but it helps gold hunters go deeper in hunted out gold fields to reach gold nuggets they couldn't reach before so good for them...