Prices are subject to change without notice. If the amount of your order increases by more than $10, you will be notified prior to shipment. Booksource is a wholesale supplier of authentic children's literature for the education industry, and as such, only ships to commercial addresses. Books may be returned within 30 days. Returned items must be unused and in a condition allowing them to be resold. Books with attached labels cannot be returned. Booksource offers free shipping via UPS Ground Service within the continental United States on all orders over $150. Orders totaling less than $150 will incur a $9.99 shipping fee. Additional shipping fees will apply to orders shipping to Alaska or Hawaii, regardless of order total. To receive terms of net 30 days, please provide an authorized school purchase order or letter of guarantee. Visa, MasterCard, American Express and checks are accepted.