$500 is only the half of it. When MANNA was up to 2¢, it was worth $1100. It shocked me alot because, last year it was only around a $40 total. They reorganized and with the new setup and 12 referrals - BINGO!
When crypto catches on and MANNA goes to a dollar, I think you will be happy with the returns for having done close to absolutely nothing except sign up. You are getting in early in the game so there is still some potential. Coinliker predicts good things for MANNA: http://www.coinliker.com/forecast/manna-BQz9-prediction