You should get regular feedback from the end user (B-to-C with the consumer, or B-to-B with the store manager, technician, anyone using your product).

FORBES: Do You Know Whether Your Customers Are Satisfied?

And it could allow Plan B One-Step to move out from behind pharmacy counters to the store counters.

WSJ: NY judge makes morning-after pill available to all

The Jackie Collins project also suggests Tesco is targeting an older demographic who wouldn't normally download movies from the internet--Collins' existing B-movie adaptations aren't exactly the fare that front Apple's iTunes Store.

FORBES