I apologize, my understanding with the payflo pro module is that the details are sent to a secure server. You are posting the info to a SSL site (verisign). Therefore in my opnion a ssl is not needed, but reccomended.

I didnt state they were the only alternatives, I am aware of the differnces and there many others to choose from. I am simply letting someone know my experince of setting up payflo pro. I was offered an ssl from verisign, and I choose godaddy which works fine.