The numbers in the OP post are bonuses in the crowd sale. But those numbers are nothing compared to what you earn when you invest into the GRX platform. You can get between 308%-414% return on your investment within a few months. The customer service is absolutely outstanding and you can tell this company is legitimate. They are responsive, with regular updates, and have shown honesty and integrity.
GRX is already on a few exchanges, and the price has gone from ICO of around $1 or under to $7.53 already. Other exchanges who have listed the coin but not gone live yet have buy orders of $15 stacked up already. If you buy some at $7 you can still x70 your investment into the coin alone. Time is running out to buy, this is going to the moon in a few weeks mark my words. Just look at RegalCoin it went up to $90 within a month, this coin is very similar to that.
Another reason why it's going to the moon is the ICO sale. It was in 3 stages and all the coins sold out within half an hour of going live on all 3 stages. With thousands of people having to be refunded because they didn't get in quick enough. These people are now piling their money into this coin while it is still low.
Here are some numbers as an example. Invest $500 now which will get you 70 coins and you will see an increase in value of around x10 return in the coin value alone. $5000 in your pocket. And invest that coin into the lending platform you are going to see 308%-414% returns $15,400 - $20,555.
$500 investment to make $20,555 in a few months is definitely worth it. But make sure you buy now before all the other exchanges open and you miss out!