Psychology by Peter O. Gray Hardcover Sixth Edition. Great Condition! Shipping Volume Discounts Check the Books, DVD's, VHS Categories in our store and Purchase 2 or more Media items from our store and you will get a volume discount. Grab a different Book or Movie for every member of your family or treat yourself to a few! Discount 5% off 2 7% off 3 10% off 4 or more Shipping We ship Monday through Friday within 1 business day. Our carrier picks up packages Monday - Saturday. However, we are located in the country and our carrier is a rural carrier so he may be out late delivering past the time of city drivers. He may also not pickup in bad weather as nobody clears our road. Any day that he's out past 4pm then the package will not be scanned until the following morning. Mondays or the day after a holiday this will always be the case and also any busy day for him may slow him down.