Cataloging Charms

I've been cataloging charms lately. Let's face it, this game is dull. So, I have several charms categorized by the number of clovers. I mark many with the number of coins produced when cashed in. It is tedious work and I've only tallied counts for about half of the 130-odd charms I've captured so far.

One thing I notice is some charms increase output by an order of magnitude. It is generally the lower end charms, but producing 50,000 one time and 500,000 the next is surprising. That either means the range for any given charm is quite wide or charm inflation (to mirror reality.)

So what is the range for charm value? There must be a min and max in there somewhere. Idle curiosity.