[hakfoo]

I think in a way, we already sort of have precedent for this, in the comics sector.

The Japanese-style "phone book sized" manga weeklies/monthlies are the manifestation of this idea. Technically it's not a "free" teaser, but if you buy the issue for one or two "known" series you want to try, the rest is shoveled into your hand for free.

It also provides a good stickiness factor-- if you originally bought the magazine for one or two series, hopefully you've glommed onto others by the time those end or you lose interest in them.