Do I understand that most bounty rewards have been paid already? Why bounty hunters don't sell their tokens at a low price

not all but most of the bounty hunters has been paid already.
the bounty hunters is smarter now, they try to hold it for profit. but some well sell to make a cents.

You right, I got 2067 tokens from Bounty payment ..
But I will not sell it hurriedly, I'm still waiting until the price is above $ 2

This is long term investment as long as you hold the coins the price will start increasing only when we see micro money start issuing the tokens to lenders. I think it will take more than a year to reach that price.