It sucks that you spent money on an untested item, when you didn't know
exactly how it worked and are now pissed about it; because it worked in a manner that you didn't expect..
It does sound like a bug that you got a couple of 5m claim depths; kinda like the y2k bug. It's like you were actually searching at 1005 meters, but it couldn't show you the 1000, because it doesn't normally go higher.
As for the Ferrari references - they're not even a legitimate way to compare the situation. Mindark did NOT tell you that the enhancer was going to last for 100 bombs, they did NOT say that you wouldn't find claims lower than 1k depth.
So in essence, they didn't tell you 'the ferrari goes 200mph when it only goes 20mph.'
But, honestly - you've been "selling out" to leave game - just about every time I've seen you ... for the last
three years now.
If you feel like "It's a gamble, shit - pyramid scheme," then it could be time for you to
actually cut the cord, to walk away, and really do what you've been talking about doing for years.
Good luck figuring out whatever it is that you're going to be doing - but my suggestion is to wait until there's a lot more testing done on these enhancers; before you buy them again and have another freak out.