There's no one pronoun that can translate on. Sometimes you works, and sometimes we works.
For your specific sentence, the only ways to say it are probably
you can get x for free
people can get x for free.
we can get x for free
suggests that we can get x, but not everybody can.
But sometimes we works and you doesn't. For example, in the sentence
we don't know where elephants go to die
we works fine, but using you in that sentence might sugges that I know where the elephant graveyard is.
You can use people in both of those sentences, but I suspect people doesn't always work, either.