"could" Being the operative keyword here. It is the same as when they market and they will say. "Get up to $xx/xx% back"....

Read very carefully. "Up to" "could" can mean anything. I could get struck by lightning tomorrow. I could be hit by a car crossing the road. Win the lottery? (Which I never entered)  Get impregnated by space aliens and go into labour?
All these things are could. In theory, the odds of anything happening are there even if they are 999999999999999999 to 1. The fact that it exists means there are odds for it.

For all, we know they give every 1000? 10000? To the person that $10? They not lying. They did say up to.

If I say you can win up to a billion $ and you win 1 $$ I have not lied to you. I just haven't given the exact details. That is why if it doesn't say it then don't assume it.

After having said that has anyone actually tried this?

I hate Paypal and want it to leave bitcoin alone.