I mention below that I had bought Horse Latitudes while in the Twin Cities. I had looked for this a couple of times recently in bookstores in Columbus without finding it. I could have ordered it from Amazon, but I hesitated as I thought I might come across it somewhere, maybe in another city on my travels.
I realize that I still like to have the experience of finding and buying books, and even when I know I am definitely going to buy something, I postpone looking for it online until it appears that it is just not available in the bookstores I regularly visit, or in stores on several trips.
I don't like ordering in-store either, as - you never know - I might just find it somewhere else!