All currencies on Minnesota are very scarce and rarely come up for sale.
The Duluth issue is not listed in Mitchell-Shafer..indicative of scarcity. Hewitt K040-F10 lists the overall issue as R6 (6-10) composed of .05,.10 and .50 denominations so it is a scarce note on a city that has few issues in a tough state of collectible currency items.
This individual issue is rated R7(1-5 known).
The Co-Operative issued fractional scrip that was redeemable only "in exchange for our goods and services". The organization used a barter system for the benefit of the unemployed in Duluth during the Great Depression.