For meal prep services they definitely charge for convenience but the meal does end up costing less than eating something comparable at a restaurant or delivery. What I liked most about it was the you could indulge in variety with the exact portions already provided so you don’t have to buy a bunch of different spices that accumulate and loose flavor over time. It was also convenient for single serving meals when a lot of ingredients at the store are not packaged that way in the US. Agreed, convenience costs though, for me delivery services were worth the compromise when I was single.