As in everything else you will get what you paid for.
The more you pay the more you get.
There are incredibly persuasive people out there that can get commitment for projects without cash. If you are asking here, you are not them and thats probably a good thing, they usually rip people off.
In the end there always payment, favours, quid pro quo, beer. Learn the barter system if you dont have cash and always honour your commitments
Perfect for schools who have a heap of Canon gear