So, here we are...
The cache is related to a water-tower, which does not sound related to risk and gain at all, does it.
However, Trebon, the town, at least to me, is related to risk and gain very closely. Here my wife and I got married. It is my wife's second and my third attempt, and we both know too well, how bad things can develop. So the risk is clear, and so is the potential gain. So far, I can happily report that the rich reward has been ours! That's why she and I had to find this cache together, and why we came again after the original failure to find it.
I hope that such a story counts... At least to us it does!