Regular Anejo Sharks aren't that hard to come by, you just have to be ready in June and November-December. Yes some places jack them up, some sell at MSRP.
The problem is that the ones that like them stash whatever they have and aren't just unloading 10-15 because somebody wants them. Then they have to source them again themselves. Again, while not impossible, they are a tougher than normal card to pull.
May I suggest the other vitolas? Have you tried the 46 or 50? The 46 is my favorite Anejo, even more so than the Shark, and can be found much more readily even later in the season. They release at the same time but don't sell as fast.
These fly around here in Wishlists and such because many of us can spare one, but a multiple sale may be tougher to pull off. Good luck though!