How much does Crisis Cleanup cost?

It's currently free to disaster recovery organizations.  We want Crisis Cleanup to be used to assist survivors and coordinate relief efforts.  We recognized that if we charged even $0.99 per year, we'd get an 80% drop-off rate.
We are funded primarily by the passion of our volunteers. We have received a few grants to fund a couple of months' of development, and hope to continue to find funding.  Notwithstanding, all of the Crisis Cleanup developers and project participants donate most of their time.