Survival for Sale

Aaron Blake owes money he cannot pay back. His mother is dying, and the shop he runs is on the demolition list. Then the Apocalypse Shop System attaches itself to him and opens a way into a wasteland where people fight over scraps of moldy bread. Aaron carries cake, instant noodles and packet snacks through it and sets one price for the whole shelf, 100 grams of gold for any item. Refugees pay it, and so do the warlords who hold the territory. Mercenaries come after the stock next, then a cartel that wants the shop itself, so Aaron puts together a crew and works on upgrading the system.