You can't change the amount with ARB? I thought you could.
Store their card data in Authorizenet CIM and run a nightly cron job to make the charges you need. You can charge whatever amount you need and never have to ask for payment info twice.
Store their card data in Authorizenet CIM and run a nightly cron job to make the charges you need. You can charge whatever amount you need and never have to ask for payment info twice.