Out of curiosity, how many Essentials books were stocked versus Pathfinder books? At every Borders and Barnes & Noble I've been to locally, there are plenty of Essentials books available, but none of them stock more than a copy (or two at most) of the Pathfinder core books. So, I mean "The APG needed a restock," might not mean much if that meant they needed to reorder the one copy they had, versus having ten copies of any given Essentials book and selling through five of them.
I'm always very wary of context-free information like that given above being spread around.
That is actually the biggest problem that the local Borders is having with Essentials - They got in a dozen of each, two dozen of Heroes of the Fallen Land, put them on the endcaps, but then they did not sell as many as the also new APG - while they only got in four of the APG it sold through, was replaced, and sold through again. Since release they have sold better than a dozen of the APG, getting them in a few at a time, then selling through.
They sold half a dozen of Fallen Land, more than they did for any of the others, aside from the Tiles sets. (The Dungeon Tiles set also sold through an order of eight - doing better than anything else in Essentials line.) They got in two dozen of Fallen Land. As a result a bunch of the Essentials books were stripped, their covers returned. (I hate this practice, better for the bookstore, but incredibly wasteful.) Better than two cases of books destroyed. About fifty volumes.
They sold two out of the dozen Basic boxes.

This is the one I thought would be a big seller, but it just sat there. It makes me worry about the boxed Pathfinder Basics. At the time the manager didn't know if they should be returned or crushed.
Most of the sales for Essentials were just after Christmas, with folks using gift certificates. Sales of PFRPG seemed pretty steady, except for a clump around Thanksgiving where all the PFRPG Core books in the store were bought at once. (I got hired to run their first games.

)
Mind you, for a lot of places, selling through eight copies of APG would not be a big deal, but considering how low RPG sales were otherwise PFRPG did really well.
Essentials did better than anything beside PFRPG, but annoyed the manager with how much space was taken for mediocre sales. (Sadly, the real money is in romances.... Oi! )
At this point a vastly reduced Essentials area still holds an endcap, while PFRPG is at eye level on the main shelf, faced. The rest of 4e is above eye level, spined. (The hardcovers are really not doing well - Essentials
did out sell them for the Christmas season.) Above eye level is better than below - people would rather stretch than bend. Eye level is where you place items that are moving, or that you want to move. Below eye level includes the nWoD material, Shadowrun, Supernatural, and the WH40K RPGs.
As far as the manager is concerned it is better to have a stock of two and sell through than it is to have a stock of twelve and sell two.
Also, levels for WotC orders are determined at corporate level - given his druthers they would not have gotten two dozen of Fallen Lands. Having them forced on him, then not sell, rankled. Also annoying was Gamma World - one copy, sold within hours, and it took months to restock. And the restock was also a single copy, along with the new expansion. Given his choice he might well have ordered, and sold through, half a dozen. There was a lot more interest in Gamma World than in Essentials, and as far as I can see there still is.
Hell, if it is still there when I hit the store today I will buy ther one copy myself.
Pathfinder levels are determined by the store - he ordered five of Bestiary 2, sold through, got in five more, sold through, got in five more, and I was finally able to get my copy. The first two stockings sold through in a day. (Annoyingly, three of the copies purchased before I could get my own were sold to some of my players....)
To add further context - there is at least one local core of eighteen PFRPG players that I know, not including myself. I think that there is at least one other such group.
I know one Gamma World player, and no 4e players.
So it is possible that I have been skewing the numbers simply by sharing my enthusiasm - that most of the purchasers are either people that I know or people that they in turn know. The fact that the manager at the local Borders pegged me to teach a bunch of new players about PFRPG certainly points in that direction.
An enthusiastic core can skew numbers in weird directions - at one LGS that I used to frequent the biggest seller was Rifts, because of a single, very enthusiastic, core. While I never played in their game they were a happy bunch of folks who likely helped sell the game to a bunch of others.
Does that put it more in context for you?
Oddly enough, writing that helped put it in context for me, I had not stopped to realize that I may be part of the reason PFRPG is doing better than 4e locally. Weird. 4e may not have such a booster who visits Borders.
The Auld Grump, maybe I need to get a tee shirt....
