Mind,
Dude, I think you may have paid way to much to create this application. What do you think?
In my opinion you could have done without the video -$1500 (or gotten a cheaper one for $500)
Regarding the graphics work - someone took advantage of you. $5600 is ridiculous for graphics. Next time come to me and my team will gladly do it for you for $500.
As for the $5300 for game engine creation - I think you could have gotten this done for way less also. For this amount of money you could have hired two full time senior java/android developers from India - for 3 months, or more.
I did not write this to attack you or get a rise out of you. I wanted you to know that it should not have taken this much money to create that game. I appreciate the complexity of your app but it seems like maybe you got caught up with some expensive developers/designers who cared more about making money than working efficiently for your business.
Again - what are your thoughts on this, do you think you paid too much?