Under FAQs they make it a little clearer:
Q:
I need activity statements and/or specific transaction toll receipts for business. What do I do?
A: To print your monthly activity statements free of charge, simply access your online account with your username, SunPass account or transponder number and PIN. Go to Statements on the right of the page and click on Summary or Detail. Then choose the month and select View. You may also request hard copy statements to be mailed to you. The fees for personal account statements are $1.50/monthly. Summary statements for commercial accounts are available at no cost. Detailed commercial account statements cost $5.00/monthly. The Florida Department of Transportation does not consider Internet-generated statements as official documents in cases of dispute. To request hard copy statements, please contact the SunPass Customer Service Center at 1-888-865-5352. If you need receipts for specific toll transactions, you may print those receipts free of charge online.
Hopefully that helps.