I don't think you understand how Kickstarter works. People aren't giving me money out of the goodness of their hearts; they get stuff in return--actual, tangible stuff.
The original proposal was for money to finish paying my editor, the book designer, the cover artist and to buy and ship books to the backers. To do that I figured I needed $1,500 bare bones budget, and that's what I asked for. I even forgot to figure in the taxes on the Kickstarter money and Kickstarter's own fees; I would have come up a little short.
Kickstarter hand-approves every project submitted. Had I asked for anything for myself, Kickstarter would have denied the project from the get-go, but I didn't, and it didn't.
When this became a runaway success, I started adding on bonuses until I finally ran out of ideas. I'm doing the extras because I have the money now; they are things I've wanted to do all along, like the world map and the audiobook. Most of the extra money is going toward those things.
I had no obligation to do anything more than what I initially offered. In other words, way way
way more of the money could be going in my pocket free and clear,
with Kickstarter's blessing. In fact, they made me a staff pick--AFTER I made my goal.
I don't understand what you want or expect me to do. Should I give the extra money back? People don't want me to give it back, they want their stuff! Most of them bought their packages after I met my goal; that I met my goal is no secret, it's right there on the page. The individual components of the $30 package with the bonuses total around $50 if bought individually--for my fans, it's a bargain. (If you go to the Kickstarter page and look at the original packages you won't see the bonus stuff; you can't change the packages once someone's bought one. The bonuses are covered in the updates and at the bottom of the project page.)
If you're taken aback, don't back me.
That's in the Kickstarter guidelines, too.