That's a very narrow window of value. If < $10k means you're better off going with the per-transaction rate, >10k but less than $13,095 means you're better off with a regular merchant account and > $13,095 but less than $21k means you're better off with the flat rate, then how many firms would really benefit from this?

Looks like they should say "if you're doing more than $10k (or $13k if you want to bring in the competition), but less than $21k, take this deal". But of course, no one would take it.