All four ingredients are shelf-stable staples at every Charlotte grocer—banana, milk, and canned or frozen pineapple are standard, and coconut extract is easy to find at Harris Teeter, Food Lion, or Kroger. The cost is minimal, running roughly $0.60–0.80 per serving if using standard grocery-store bananas and canned pineapple. The 5-minute time is honest and accounts only for blending; no prep work is misrepresented. The real drawback is that it's a single-night smoothie that doesn't improve on leftovers, and the recipe skips cream or coconut milk that would make it feel more like an actual piña colada rather than a thin fruit blend.