Free account testing payment submissions

I have a form on a free acct that takes orders.  I am trying out new features and testing but using my 10 allotted submissions.  How can I better proceed?

When making payment submissions, whether in Sandbox Mode or in Live Mode, such submissions will count toward your payment submission limits.

However, considering that you have been testing with Sandbox Mode and not really been receiving payments, we have reset your payment submission counters, so that you can continue testing out and using your forms.

If there is anything else we can help you with, please let us know. Cheers