Looking forward to trying this out!
Edit: You guys might want to be a bit more clear that you're requiring a credit card to signup for beta access, even if you're not charging for 30 days.
On the other hand, hiding the price also drives away people (like me) who feel tricked by that practice.
On the other hand, I'd really encourage you to implement the export data feature. I do not commit to any cloud service if I cannot get my data back if the business closes (unlikely with big companies, more likely with startups :).
I'm not inclined to put in my credit card number up front for the service that I'm not even sure right for me or not...