One rule, under ten dollars, and a map built to enforce it: entries carry a “price verified” mark rather than a star rating nobody can audit. It skews usefully specific — a hamburger with onions and a Coke at Pete’s Hamburger Stand in Prairie du Chien, Wisconsin — and sorts by city, from sixty-odd spots in Houston down to a handful elsewhere. No ads and no sponsored placements, which is what makes the ten-dollar rule mean anything.