Generally yes....things are worth what someone will pay. But not always...that’s the point of the story. If you buy controlling interest in this company / deli for $50,000,100, then what? Liquidate it - building, land equipment, stock on the shelves, and any other assets, etc., subtract liabilities......do you think it’s worth $50-mil? I doubt it. Price is what you pay, value is what you get. It’s only truly worth what it’s worth.
Intrinsic value is the coin of the realm.
Why do you think Bill Gates is the largest owner of farmland in the US?