They re-modeled the old fan store which is now the 47 Brand Store. The new Fan Gear Store is at the direct opposite side of the WFC and wasn't anything before I think.
But yeah, its extremely overpriced. Jerseys are $20 more than at the Skatezone, the player tshirts are $35 where at Modells they are only $20. I was in Philly not too long ago and I was kind of dissapointed. Being from Canada, you don't see the most Flyers gear in the world, but there is definitely some out there. Usually in Philly (specifically at the arena) they had some items that I couldn't find in Canada. But this new store really didn't have that much unique apparel that you could only find in Philly.