Don’t you hate when you are out scouting for books to send into Amazon FBA, you find a great book and then BAM it has some kind of mark, smudge or stain along the edge. For the longest time I would just pass these books up or throw them out if I had already made the purchase. I didn’t know how I could fix it. In the video below I give you a demonstration on how you can remove those marks, including remainder marks from the edges of books.
Here is a link to a variety pack of sand paper you can use. However, you can likely get a better deal by just picking some up at Walmart or a local hardware store.