Build and manage your own profitable blog network with the help of WPMU DEV Pro Sites. You can generate revenue by offering premium services, built-in marketing tools, storage upgrades, and domain mapping. This is the same business structure like WordPress.org and EDU blogs. It has 3 built-in payment gateways with 24 currencies.
This is the EXACT same plugin as distributed by the developer on WPMU DEV. The developers’ links are provided above.