What is the meaning of per M2?

Excuse me, could you please clarify what you mean by "per M2"? This term isn't typically used in the context of cryptocurrency or finance as far as I'm aware. Could it be a reference to a specific metric, perhaps related to real estate or another industry? If so, it might be helpful to provide more context around the topic you're discussing. Alternatively, could it be a typo or abbreviation for something else entirely? Without more information, it's difficult to give a definitive answer.