We obtain our items through consignment. We accept curricula for grades preschool through high school. When an item has been in the store longer than 1 year the price is reduced to 1\2 price. You may see 2 identical items with the price listed at a price half of the other. All our items are pre owned, we only list items in good to excellent condition. You can expect items in good to excellent condition unless noted in the description Tips for searching our site: By ISBN number, Abeka and Bob Jones can be searched by publisher's catalog number.