Now, I just elect to not order any delivery at all. There is a 15% service fee, a delivery fee, AND food markup because they charge restaurant like 30%.
I am not sure how is this a fair deal. The guy ordering $300 worth of food probably already paid $60-$100 to get his food. This is already way higher than any traditional delivery service would ask for. The price tag just no longer makes sense for me.
Having this in place, even automated, can discourage user from exhibiting bad habit that cannot be automatically detected.