I have observed that there are lot as lot of selfdrop tokens nowadays. Others are requiring little fees, pay for the gas, while there's also some that you can directly add to your wallet. I mean can these tokens possibly make you rich? 
because some are given millions of millions of tokens and if its price goes at least $1 then congratulate yourself (if you have joined this campaign) for being an instant millionaire. But my question is why are these "ALMOST FREE TOKENS" arising all of a sudden? What could the developer benefit if they give their tokens in exchange of a little gas you pay?
Obviously those are scam projects or some shitcoins promotions it may sounds stupid but yes there is a possibilities that this will bring you to become millionaire if the specific coin used by the whales to pump and dump but the thing is this is a Onces in a Billion chanceso if you risk your small amount(since they are very cheap as what youve said) then go for it.but if i were you i would prefer to buy altcoins or tokens that has truthful potential than thise scamer coins because some are given millions of millions of tokens and if its price goes at least $1 then congratulate yourself (if you have joined this campaign) for being an instant millionaire. But my question is why are these "ALMOST FREE TOKENS" arising all of a sudden? What could the developer benefit if they give their tokens in exchange of a little gas you pay?