The functionality in this module was migrated out of the core MERCI module to make maintaining a more stable core possible. The develop of module will likely remain active after the initial pricing configurations are migrated.
MERCI currently supports 2 pricing modules:
Member Pricing - X free hours with X% discount
Daypart/Weekend Pricing - Days are broken up into morning/afternoon/evening prices
The merci_member_pricing and merci_daypart_pricing will be a great starting point for anyone interested in developing a custom pricing module.