I know it was only an example, but the cost of scuba diving compared to the cost of ferreting are on completely different ends of the scale, plus it's taken me 18 months of looking around this forum/YouTube, trying to learn everything so I don't go out in to the field without a clue. I know it's something I will enjoy, just got to hope I can get some permission.
Most expensive thing so far was Mk3 locator and collar, but my misses got me that for my birthday so all good ;-)