What you are paying for:
Contribution towards the trophies and prizes
Custom team attire and goodie back including an alcoholic beverage. 
I'm being vague because I'd prefer it to be a surprise. 
I've tried to make this a good value as possible, as a result I will be out of pocket on this. I want to be clear and transparent when I say I am not making any money out of this. Instead the opposite is true lol.