Are you sure the one online was the same imprint and trim size as the one in-store? Publishers often have multiple different imprints and trim sizes as a means

Are you sure the one online was the same imprint and trim size as the one in-store? Publishers often have multiple different imprints and trim sizes as a means of price discrimination, as well as for stylistic reasons. Just the other week I went into Barnes & Noble to purchase a book and they had two different trim sizes of the same exact book right next to each other. Both paperback but one was large-and-thin while the other was small-and-thick. The former was about $4 more than the latter.