>Will I go over if I watch this movie? How much will my bill be this month? //
Wouldn't that be solved with a simple ticker giving you the current spend. This way you wouldn't have "overage" charges that suddenly leap up, your spend would match usage, watch one more movie and it will cost you a small fraction extra to what it cost last month when you watched 23 movies, say.
Not all utilities are measured, domestic water is often unmetered FWIW.
Wouldn't that be solved with a simple ticker giving you the current spend. This way you wouldn't have "overage" charges that suddenly leap up, your spend would match usage, watch one more movie and it will cost you a small fraction extra to what it cost last month when you watched 23 movies, say.
Not all utilities are measured, domestic water is often unmetered FWIW.