If like me you are wondering about the prices, I finally found the FAQ (link in small font at the bottom of the page) and there is the relevant information:
2 Days: $2
1 Week: $3
1 Month: $10
6 Months: $50
So, if you need a long term server (which is not what this service is intended for) it's a lot more expensive than other cheap VPSs (it's easy to find OpenVZ VPSs for as little as $15/yr).
The price reinforces the idea of free temporary Linux servers with short TTL. I think it's smart and the price point could possibly make up for the money lost providing a free service. I am curious as to how it'll turn out financially.
That's the real test here. A 2 hour instance is dirt cheap and each paid server covers the cost of at least 100 free ones but until the data starts rolling in we don't know what the base conversion rate will be and whether this can be self-sustaining in the long run.
I totally agree with that, that's why I explicitly said "which is not what this service is intended for". My point was to inform people who might be looking for the same information as me, not at all to criticize this service.