www.paypal.comwww.paypal.com/cgi-bin/webscr?cmd=_payflow-pro-overview-outsidewww.authorize.net
Pay PalTM, PayFlowPro and Auth.NET(R) that allow online stores to connect and integrate to existing Internet merchant accounts keeping information secure and optimizing customer experience.
License
Transaction-based license*
Advantages
Customizable to your intended number of customers
Approx Costs
Varies between different processors ($300+/month)*
Cost Detail
Set-up cost plus number of transactions
*Licensing models and approximate costs are subject to change; this is an overview of how they generally work. Varying projects incur specific license and pricing models.