Be careful about what gets "front and center placement." That is all purchased by publishers and reflects nothing more than what they decide to pay for placement of.
Just as with shelf-space in supermarkets, the bookstore owners figured out how to earn even more money by selling that to publishers. I can't recall the figure I read so I won't try to repeat it here, but I remember thinking that one of those "front and center placement" book racks brought in more than double my annual income for ONE Barnes&Noble booktore!
So be careful -- that front and center placement is no reflection of what the bookstores want to sell but rather is a reflection of what the publishers want to push, knowing that a certain large percentage of bookstore customers make it no further than those racks before finding a book to buy. Not every bookstore customer is a deeprooted bibliophile who will search all the bookshelves looking for a rare gem. Many (most?) bookstore customers simply want to find the next book or two that they will read and leave.
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