I haven't seen it anywhere on the android website, at least as much as I have read, but what distinguishes how much an application costs? Is that something the developer sets? Also, how does the developer receive money once people buy their application? Does Android take any cut of that, such of 15% or every sale and the developer gets the rest? Lastly, is the developer paid PER application sold? Or does he/she get a check once 100 are sold and every 100 after that? Is there any minimum at all that need to be bought by others in order for developers to be paid?