After the break-up of the Mauryan empire, new invaders appeared on the northwest frontier.
Invaders popped up on the frontier after the empire's dissolution.
(To the extent the discount audience exists at all, it's mostly a rental audience, because renting saves money not only on the unit price of viewing but also on parking, babysitting, and other incidental costs associated with going out; perhaps most important of all, the rental audience knows it can bail out with greater ease if the movie in question proves unwatchable.)