We should be able to charge a delivery fee based off mileage from the store without having to define via a map. Since the system uses Google Maps to know the delivery zones, it would also know exactly how many miles it is. For example, we should be able to say if address is within 1 mile from the store, the delivery fee is 0.00, if it is 1-2 miles from the store it is $1.00, or 2-3 miles from the store $3.00 etc. Or simply make it something like $x.xx per mile, and mile 1 is $x.xx - also make a simple max delivery mileage is x miles from store.