Fader the Fading Highlighter by Jessica Hodges
My husband is a student so we are very good friends with the Amazon Textbook Trade-In Program. Sadly, they don’t accept books with lot of highlighting. I had a book from a Textiles class a few years ago that would have been worth 40 bucks! If only the person before me had not highlighted every line of every page. This fading highlighter is such a great idea!! It’s not in production yet but you can go and submit what price you would pay and answer some other questions about it. I think some highlighters do fade a little bit over time but this highlighter fades completely. So you can highlight away and still get some money back!