I finally received an Airdrop that actually had some value (BLUE) and traded 10,000 for .3 ETH on EtherDelta.  A couple days later it was trading higher so I purchased more than twice the original amount I had.  A couple more days go by, I sell and almost double the amount of ETH I had in the exchange. 

I say all this to say what you are doing is highly plausible especially with the volatility in the crypto market.  Best of luck to you!