You wont be paying them equally on all goods. The small good will gain a cost advantage over the large good. The digital good will gain a cost advantage over the physical good. The good delivered during non peak hours will gain a cost advantage over the good delivered during rush hour. The good delivered by drone will gain a cost advantage over the good delivered by land vehicle.
The "digital good"? Drone delivery? We're talking real life here, not a William Gibson novel.
You're basically saying that the lower/middle class folks driving those delivery trucks will simply have to work at night, so you can avoid paying for your plan.
You're not going to avoid these fees because you don't drive, you'll just be paying for them through higher prices on the goods you buy.