There has been discussion amongst various groups. I know the Ontario apple marketers, in approximately 1999-2000, were trying to determine and understand the actual market price so that as a group they weren't going into the market below price amongst each other.
The management and development of that system alone was very difficult, with misinformation sometimes being fed into the system around pricing and/or volumes. That's just an example on the apple side relative to the vegetable side, and you can take any of the various groups. The complexity of creating that floor price would be extremely challenging.
Is there an uptake to looking at how you could create that? Potentially there is, but the time investment to create it could maybe be misused. There may be other ways to achieve a competitive market, as opposed to spending a lot of time, money, and effort on that specific issue.