Valid points but want to address some specific points: 2) Not entirely true. On average you may be right, but some specific items that I care about, like some

Valid points but want to address some specific points: 2) Not entirely true. On average you may be right, but some specific items that I care about, like some good brands of milk, are actually cheaper on the app than at the store (my reference store is Rewe which is the closest to me and a bit on the expensive side). 3) If the price of items is higher as you say, then shouldn't that cover the salaries of the couriers? Also they have a guaranteed minimum wage and tips. They get a great workout since it's all based on bicycles. 4) The deliveries happen from a warehouse and not the grocery store. I assume the warehouse is optimized for deliveries and not foot fall. On average I do pay more per week, maybe +10€, which is well worth it since I have a toddler at home and every hour is accounted for. P.S. German cities are very compact and have decent bicycle lanes.