The lack of a plan between tiny and huge may be intentional. Cellphone providers seem to work the same way, offering cheap starter plans with just enough minute

The lack of a plan between tiny and huge may be intentional. Cellphone providers seem to work the same way, offering cheap starter plans with just enough minutes so you either go over each month, and consider upgrading to the massive plan. If only cell providers also followed this precedent of regularly stepping down the price of all the plans!