I cancelled one of those prepared meals after only 2-3 weeks, for one simple reason: dealing with packaging was a major pain in the neck. Iced gel that you need to wait many hours to melt, and then spend half an hour to slowly pour it down the drain, not to mention discarding (properly) the outsized card boxes. Also, once you narrow the selection to your preferred diet (e.g., low carbs), the choice tends to be smaller and repetitive.