You do have a point. But think of that:
You upvoted me and it resulted in 0,11$, which means, you should get that as well by upvoting your own comments. According to the rules, you are allowed to make one comment every 20 seconds. Let's make that 30 including the self-upvote. That is 2 per minute or 120 per hour. In other words:
You can earn 13$ per hour by doing nothing else but creating and upvoting your own comments. Isn't that... not what is intended with this platform? I mean, it's a second digging.
Can you try that please with a couple of comments? I'd like to see if it works..
Your voting power will reduce about 1.5% with the each next voting at 100% of upvote strength. regardless is it selfupvote, or not. So it means you will have chance to upvote yourself or someone else just 10 times, and then you will have to wait about a day to recover your voting power to 100%
Linear. It depends on persentage of upvoting (100% by default) So the each next upvote will cost less than previous. you can visit steemnow.com it is good service to check your current voting power. There is calculator that will show cost of upvote at different conditions.
Well, I looked at your stats, you will have to wait 4-5 days to recover to 100% of voting power. No voting suggested in this period. The price of upvote depends on Steem Power, not reputation. You have rewards for your activity on the site partly in steem power (SP), partly in steem dollars (SBD). You can convert earned steem dollars into Steem (token) and then convert it into fiat carrency, keep as cryptocurrency or by a SteemPower. The last is called power-up. As more steempower you have as bigger your upvote sum. You can buy Steem for your money and then convert it in Steem Power - to become investor, but remember the back operation is not so easy - converting SteemPower into Steem (powerdown) takes a lot of time.