What are some e-commerce hosting companies with turn-key shopping cart systems that I can just input a database of my products and be off and running? No programming, just a feature rich, configurable solution, including payment processing.

I have a small company looking to take a php site to a different host. Our current host is not cheap and not expensive and is down far too much to be suitable for running an online store. The problem is that all hosting companies that I see all guarantee 99.6% uptime, but when I try to research them online, there is very little information and I know that what they say cant be true because our current host says the same thing. Currently I'm looking towards HostMonster, Hostway, StartLogic, Yahoo for e-commerce, AT&T but I would appreciate some insight as I feel I may just be changing one bad host for another. Answers and advice welcome!

I am signing up to get online web-hosting and is a bit confuse on why there is so much difference in web-space when you compare the e-commerce plan with the personal plan. The e-commerce plan cost about $9 per month and offers 50mb of web-space. The personal plan however offers 50gb of web-space and cost about $2 per month. Why is there such a difference in price and space? I'm new to this internet thing so please excuses me it I sound silly for asking such question. Thanks..