The website has the most current info and it says explicitly 25Checks/Annually free for Individuals and after that $1/Check. Businesses pay $1/Check. Recipients of the Checks pay nothing, only the originator does.

We use both ACH as well as Check21 (which is a different network than ACH) and this allows us to do overnight credits. ACH Debits take 2-3 working days whereas Check21 can be overnight.

This avoids two problems with ACH i.e. account verification and 3 day delay in addition to some bank accounts not being ACH enabled.