We don't make any money, but all the hardware is just making use of unspent resources. E.g. The storage is a GlusterFS cluster across all of my machines, encrypted and replicated three times in case anything goes wrong. The cpu usage and memory usage is negligible and bandwidth is free from my provider.

Until it gets to about 32TB of used storage it won't cost me anything, and at the current rate of growth that is going to take decades.