Writing Prompt Tuesday

In the future, vices and virtues are sold on the black market. Criminals and junkies are buying addictions and guilt as easily as you can buy eggs at the store. You are not an addict. In fact, you are a good person who is just down on their luck. You decide to sell a virtue in order to pay your bills. What do you sell? How are you affected? What do you do once it’s gone?