Her ass is worth precisely what the market will bear, not a penny more and not a penny less. If she can get an inflated sum for an act which has already been caught on tape and put out on the market numerous times ('Sasha Grey Anal Scene' is pretty much the factory rims of most contemporary gonzo releases), then good luck to her.

Personally, I agree with those here who have said it is a stalling tactic designed to separate the wheat from the chaff and cut back on her rectum-taxing anal workload, and thus reduce the wear and tear on her backdoor.

I seem to recall advocating many moons ago that she should take it slowly and hold out on doing the more extreme acts like anal and DP until she needed to for career longevity reasons...but hey, what do I know?