Yes, I am still unpacking books and supplies from my orders this summer. I check in each book and place the vendor and price in the inside cover. Books are stamped and a date due slip placed in back, and they are ready to go. I get most of my books from Follett, and Perma-Bound already processed.
Books from other vendors ( Junior Library guild) I catalog, make labels, stamp , date due slip, and then they are good to go.
Those are my three major jobbers for books and I pretty much just use those three except when I am ordering Reference sources. This simplifies my ordering and processing.