Good profit, I was testing an investment with 0.01 BTC and made 55.000 satoshis profit after about 1 month. It's a good progress and a good profit interest if we look another offers like lending on exchange paying much less.
Now I'm trying with a bit more money to see what happens, started yesterday, now the balance is negative, but normal on short term, let's see how it will be in medium-long term. Currently this is the best kind of investment in my opinion for Crypto-Currencies.
But you should always remember one thing that all past profits are only for your reference, and in future, you may get even better gains or losses as well. So don't ever invest in these high-risk investments which you can't afford to lose. And also try to diversify your money like OP did in this thread to reduce your losses.
I understand the topic here is online gambling investment, and OP did a good job to do an experiment and share it with. After seeing the journey, it seems like it's moving downward as it started with many gambling sites and now it's down to a little only which means the risks has also increased.
Great start from 
