On the other hand, only a limited number of users can use the service at the same time, since one page is allocated per user.

For three years, this ends up costing $871 or $951 per user.

Using such an algorithm, only one key pair is needed per user.

These are things like the number of open files or processes per user and so on.

Very often, there is one such home directory per user.

They can't really expect to make more than 25 bucks per user.

But because so many people are using cell phones, costs remain low per user.

He estimated the failure rate for condoms at 10 percent per user over the course of a year.

There are 10-12 companies that purchase this data, typically for about $0.40/month per user.

So even if it gets up to 1bn users, that's still $100 per user.