Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Avanzando Gramatica Workbook Spanish Edition

I bought a used Avanzando Gramatica Workbook Spanish edition and can't understand why they are sold if they are already written in them. "Used" should be simplified further for the buyers sake. The buyer needs to know before it's bought and decide whether they want to buy them this way. The one I bought had every single page written in, and was all in ink. I had no way of erasing it. I was very unhappy with my purchase.