I have tested this and found that when I buy votes I get up to 2 USD. The reason is people who want to earn through curation becomes interested when they see I am investing and they are going to get 25% of the rewards. Otherwise, I am going to get 0.15 to 0.25 USD which is not worthy of the time invested. So this system can only help me through bid bots otherwise it is nothing but a waste of time.