Match criteria for range of numbers in Classification Rule Builder

First off, I assume that the currency amount is already in an eVar, not in a success event.

Also, assuming that your eVar's values are stored as Text, then you can use regular expressions in Classification Rule Builder to build your buckets.

So, assuming that your eVar's values are whole numbers like this:

$0

$1

$5

$9

$13

$25

$23490234804243982904

Then the bucket for "$0-$10" would use regular expression ^\$([0-9]|10)$, i.e. match all values that are from $0 to $10, inclusive of those two numbers.

And the bucket for $11 (not $10, because $10 would have been classified in the above "$0-10" bucket) to $20 would use regular expression ^\$(1[1-9]|20)$

And so on.