This is going to be a pretty individualized post, I think, but possibly it will be useful to others? I pay very little attention to the publishing side of this business, even when I'm self-publishing. (I know, I'm bad, but... I just don't care about it.) Anyway, I just discovered Walmart has online book sales, including a Walmart e-book reading app, and I'm wondering how it all works. I see I've got books from publishers on Walmart, and I accept that the publishers made this happen, but some of my self-pubbed books are up as well. I guess I ticked the right box on whatever book distribution thing I use (Smashwords? Or... shit, I don't know. Somebody.). But the part that's confusing me is that I have two self-pubbed books in the same series, and when I click one it says it's sold and shipped by Walmart (https://www.walmart.com/ip/Feral-Book-One-in-the-Shelter-Series/53863099) and when I click the next in the series it says it's sold and shipped by Books Direct (https://www.walmart.com/ip/Lap-Dog-Book-Two-of-the-Shelter-Series/907279484). Now, Books Direct was one of the alternate sources for the first one, so I guess maybe they just put Walmart first, since it's dramatically cheaper directly from Walmart? But then why isn't the second one available from Walmart directly? Does anyone have any experience with this?