The only thing I could think of was maybe minimum spend; but if it’s around $50, they’re already so close to that they might as well order some extra non-perishables? My local grocery store has a $50 min spend and delivery is $2. I’d rather spend the extra $7 and get better, grocery store prices, over DoorDashing a $45 order. But I guess that would involve spending my own money instead of some generous sucker online.