Holding off on making that item that shows Insufficient supply on reset day until you max out your Groove isn't going to do much if the supply changes to Overflowing by that point.

I'm wondering if any one has figured out how much value Groove actually adds yet to total value. If it represents a percentage equal to Groove, then a Very High popularity item could very well be worth more on day one if supply ends up inflated at the end of the week when Groove is max. That's probably a question best answered by those that have been compiling the data to create the workshop solver spreadsheet.