SpringSource - launches CloudFoundry based on AWS

"in beta and is free to use. Normal cloud service provider fees still apply. Pricing will be announced after an extended beta period and will follow standard cloud service pricing models."

I respect the work of SpringSource and appreciate their commitment to the Java community. However, I'd be very nervous about launching an app onto a platform without first knowing the exact cost of the platform. Also, I had to dig into the FAQ to even find any mention of the price.

I skimmed the FAQ and "Getting started" part and can't help but think they either completely missed the point or fail to explain it properly.

Why would I (or anyone) want to use this, what particular problems does it solve?