My argument for clarification of what is being sold still stands. At the moment, it sounds like HUMANITY has been sold to the highest bidder (which I can see from further context this is not the case).
But that vagueness is the problem. Your logline should tell me what the set up is about, and then what the protagonist's goal is in the rest of the story. It helps me understand the sort of movie am I going to watch (in this case, am I seeing a road trip, or a space opera, or half a dozen other possibilities). Because you've left it vague, what're you're saying with this logline is "This is how the story starts. Then ... a bunch of indeterminate stuff happens, and the stakes are survival." And that makes me very unlikely to want to read your movie, because all I know if that it starts with Earth being sold, and then a protagonist has to react to that (which is a given). What SPECIFICALLY does he have to do to save his family?
This is also the section where you would build your hook - your protagonist is the LEAST LIKELY person on the planet to be able to achieve said goal, but because the stakes are high enough, he is able to dig deep and save the day. If you leave your goal vague, you leave your protagonist vague and the hook of your movie vague. And that's going to make it very difficult to sell.
As far as cliche - I went with cliche intentionally. I was trying to make a point about being specific, not actually suggesting this be the plot for your movie.