Found both books needed for classes with no problem. Chose the rental option, glad to see there is an opportunity to purchase at the end of the rental period. I signed up for text notifications which sent me a tracking number for my package a day after I submitted the order. Books came in within the week. I will say though I was expecting to get the tracking number via email too so that was a little weird. But both books came in great condition and the packaging can be reused for the return.