We have them in the U.K. still but the cost is £189 which must be going on $300 + delivery though they should knock off 20% as you would be buying from abroad. One's recently sold on Preloved for £80 ($120).
Excal 1000, Excal II, Sovereign GT, CZ-20, Tiger Shark, Tejon, GTI 1500, Surfmaster Pulse, CZ6a, DFX, AT PRO, Fisher 1235, Surf PI Pro, 1280-X, many more because I enjoy learning them. New Garrett Ca
I had one for my Tiger Shark and they were great to use to cover lots of sand in a hurry. I sold it a few years ago and now wish I had it back. I doubt Tesoro will ever make it again since their water detectors are hard wired now.