There's some confusion about this, but you don't need to pay to customize your avatar. If you win games, you get item drops which will let you customize your avatar.
Just a reminder that we posted up the full scripting reference here: http://www.urbansquall.com - we'll be adding map making tutorials in the coming weeks so you can create your own custom campaigns and stories
minyman: "Options to pay for content and also the turns being to short for games where you have lots of units " - each action in the game extends the turn time. Keep doing actions and the timer increases.
There's a bug with the Kongregate servers that is limiting us to 40 users at any one time. We're working to get this resolved asap. Sorry for the delay!