I really really dislike when services do not disclose pricing. I cannot find anything other than "Try it free for 30 days." Clicking "Learn More" gives me no more info. Regardless how much it is, this just gives me an underhanded feeling. I thought it was common knowledge these days that full disclosure of pricing is what works in generating user interaction. Not knowing what the price will be after those 30 days, I simply will not "Try it".
Ah I see that now. However, I was unwilling to even click on the "Try it" button, so I would not have gotten that information anyway. The web is too full of services that do the "try-it-free" and then the "good-luck-trying-to-cancel-the-service" that I would highly recommend they disclose the pricing up front.
I did also notice their FAQ had it after clicking around, but again, that still feels like they are hiding it, as that is a link hidden at the bottom of the page in the footer.
I provide this service as free for now, its more than one year at this point, not sure about the future. Well at least this is how Redis got started :) (*SQL was not good for real-time stats, really).