Items, spend, and the sales loop
Items are the stock your rest stop offers, and they are the game's named income lever: the official description says “sell more items to increase average customer spend.” That one line defines the whole sales system — income scales with items per customer visit, not just with foot traffic. The reward side is equally compact: sales generate the cash that funds builds and expansions, and rebirth makes customers shop faster, compounding the same chain. A catalog of item names and prices is the part no public source documents, so this page maps the documented structure and shows you where the live catalog lives (your panels).