I think the face fucking DVDs are expensive to produce. The girls' rate for standard blowjob scene is, I understand, between $300 and $500. I'd bet that gagging-and-puking face fuck scenes, which put the girls through the wringer, cost about the same as standard boy-girl ($1000 and up), but a Throat Fucks-type disc requires eight scenes instead of four. Or 12, or 20. It's expensive.
And then, after the outlay of cash, the disc ends up on the Pirate Bay and tube sites on the day-and-date of release.