I'm from Satiago, Chile. I start a project in the University of recycle service, which basically is picking up the recycle material at the home of people that paid a monthly subscription to me. For example, for US$ 4, you can ask our team to pick up your trash and take it to a clean point. We have a truck that can do this very easly. This is more like a social project, but i see some earning money potential. Is this the best way to charge my clients? or should I charge them just when they call me. Do anyone have any better idea? Thanks a lot!