This project is running on an actively used intranet site as of October 2013. I don't plan to update this page much, but if you'd like to use this module send me a message and I'd be more than happy to answer questions & help you make it work. It will need a bit of work, in the interests of full disclosure.
This module will integrate MERCI and Ubercart as flexibly as possible.
This is already accomplished by AGReservations but this module aims to be simpler and more flexible by accomplishing less. Essentially, this adds a "Payment status" field to your MERCI reservations and exposes an Add to Cart button to users looking at the MERCI reservation page.