I've used EasyWebAutomation since 2006 and can highly recommend this affordable and totally reliable online system. It's Mitch Meyerson's private label version of 1ShoppingCart.
Mitch introduced me to EasyWebAutomation when I was doing Product Factory with him and Michael Port, and was struggling to find a reliable system to build my mailing list and take payments online. I've never looked back.
You don't have an online business if you don't have a mailing list. A reliable system is a necessity. EasyWebAutomation offers a free 30-day trial. Take it for a spin.