Plum Market at DTW Airport is a specialty deli, bakery, and grocery store offering healthy snacks, gourmet candy, and Michigan-themed items. It provides gluten-free selections and clear allergen and ingredient signage. The hot food at breakfast is great, but lunch and dinner options can be mediocre, with some items like salmon described as dry and not good, though sides like mac and cheese are fantastic. The food is generally tasty and satisfying but is not cheap and is often considered vastly overpriced, with specific mentions of high costs for wraps and bento boxes. The store has seating with plugs and a separate checkout for its coffee shop. Service experiences are mixed, with reports of both nice, helpful workers and others with snooty or rude attitudes. A significant complaint notes a discrepancy where the register charged a higher price than displayed for an item.