I already have a functioning $Q(\lambda)$ implementation for a single agent working on a dynamic pricing problem with the goal of maximizing revenue. The problem that I'm working with, however, involves several different products that are replacements for each other, so dynamically pricing them all with independent learners seems incorrect, because the price of one influences the reward of the other. The goal would be to dynamically price them all so as to maximize the sum of each individual revenue.

I've been doing some research to try to find something that applies reinforcement learning in this way, but many multi-agent implementations I have found focus more on competitive games than cooperative, or they assume incomplete knowledge of other agents (I would have complete knowledge of each agent in this scenario). Are there any well-researched/documented applications of cooperative learning in this way?