Yeah, that one's everywhere now. 'The Rachel Price' is pretty much front and center on the major bookstore sites. I just picked up my copy from Amazon; delivery was quick. I know some folks have strong feelings about where to buy, but for pure convenience, it's hard to beat. My local bookstore's site also had it, and I'd probably go that route next time just to support them, even if it takes an extra day.
One thing to check is the format. The hardcover has this really nice, textured cover that looks great on the shelf, which I'm a sucker for. The ebook version was a couple bucks cheaper, obviously, but I wanted the physical thing for this one. If you're not in a rush, maybe keep an eye on Bookshop.org – they split profits with indie stores.