A grower, a processor and two shops trading with each other, with thirty days of trading already behind them. Pick a door and click around. Nothing to sign up for, and the code you are driving is the code a licensed operator runs.
Who are you today?
What the sandbox cannot do
It cannot reach a state track and trace system. Not by policy and not by a flag in the code: the database refuses to let any licence under a demo organisation name a vendor or hold a credential, so anything you record here writes its report and the report has nowhere to go. The whole market is deleted when the session expires.