That's more or less the model that they tried with the Librié (you
bought paid for stuff, and it disappeared after 60 days). Of course with the Librié it wasn't a monthly "all you can eat" it was a bi-monthly "buy it again bi-monthly" approach.
It ... wasn't well received.
I don't think I'd go for even the looser variation you've outlined, speaking for myself -- I do too much re-reading.
