What position are you applying for? I would think that you should make
sure you're ready for the particulars of the position you seek. Does
the position have anything to do with being a product manager or
finance? I wouldn't think you would need deep knowledge in their
product base and their various pricing/feature strategies unless the
position really called for it. Don't get me wrong, try to gain as much
knowledge about the company as you can but don't fret over the stuff
that's not related to the job responsibilities at hand.

Marco Leon