Still usuable by all means but no longer my go to trade site. Why? There are other sites now that offer more $, accept more titles and have a better interface. Most importantly, my main drawback from sellbackyourbook is i am afraid to put things in their cart. Before the day is over I'm alerted that certain books in my cart are no longer available for trade in or the price has decreased. It happens so fast, I feel as though as soon as I scan something in my cart, they check it to make sure it is something they want. I do not fee secure placing orders with them. I don't leave anything in the cart because of that and process my trades right away before they can change the price. When I'm using my desk top to trade with sellbackourbook, the isbn search field forgets im there and i have to keep clicking back inside the box with my mouse. Annoying. This is just constructive criticism, they pay promptly and accurately.