If you are not completely satisfied with your order, you may return the unused items (excluding cds, dvds, videos, audios and printed materials such as manuals, flash cards, charts, etc.) within 30 days from the date of invoice for a full refund (excluding shipping charges and any applicable restocking fees). Please call toll free at 1-888-298-9458 for a return authorization number, and follow the return instructions located on back of the packing slip received with your order. A copy of the packing slip must accompany all returns. We reserve the right to not accept returns that are in poor condition, do not have a return authorization number, or are not accompanied by a packing slip.