Have there been any news reports, web postings, etc. of someone finding a Geocache with a really nice reward? Like a large amount of cash or something?
What’s the richest Geocache ever found and confirmed?
Don’t know. So far, the richest one I’ve found had $2.00 in it. 
Try posting this on geocaching.com or terracaching.com. I’m sure somebody in one of those places has an answer.