I recommend 3rd Place Books. We go to the one in Ravenna or Lake Forest Park. They have a combo of new and used books. They also buy books. The staff is extremely knowledgeable and helpful if you are looking for suggestions. They also will special order anything you need. If they don't have something in one store, they do several transfers weekly from their other stores. They also have really cute curated gifts. It is a local business very much worth supporting!
If I could be here all day, I would. It's difficult to visit and not leave with a stack of books. The staff are helpful and will order books for pick-up even if they don't stock it. Nothing better than a coffee treat at the cafe and a stack of fresh books from this local bookstore!