Nothing is free, if we paid and put into our efforts here and there then its turned some value with the help of others. Your payout from posting is divided by half each you get fifty others fifty to the curators. Then Your earning is divided into fifty-fifty of the pay out rules. Hive power is obtained by the value of current market price. So, up your power is twenty five percent (assumptions) or totally fifty (if selected full power up) percent of your post payout. Or buy HP for your resource credits.