1.you could raise money ask people to give money like the website EpicStep.com :http://epicstep.com/
and make a goal like 200,000 or 10,000 and charge people after lets's say 30 days.like a fundraiser every month.
but you dont get charged until the goal is met.People would trust that.
2.or you could make your merchandise really cheap like 10$ a shirt and promote it more.
3.you guys could get with Micheal Moore and create some kind of publicity for a documentary of interviews of people around the world expressing there love and believe in wik leaks.and stream it online for a dollar to watch.
4.or you could put all the previously released documents in a book and sale it. for like 10 to 15 dollars. you could have books come out every month of cables to different demographics. like each country like "iraq book" or" china book".
5. and last you could raise money from the people for a commercial and get it aired somewhere in the world. it would go viral. and people would give money to help democracy in wikileaks.Even on youtube.
hope that helped
;D