I ended up finding 2 books that interested me, and I figured at 70% off I wasn't risking much by buying them. The first one is a novel called Blind Sight by Meg Howrey. According to the liner notes, it's about a teen learning the difference between truth and belief, using the tropes of an earthy spiritual mother and a glamorous Hollywood father.
The second book is a cookbook called Recipes for the Specific Carbohydrate Diet by Raman Prasad. It's all sorts of recipes that are grain-free, lactose-free, and sugar-free. Good stuff for detoxing, which I know is helpful for my mental and physical health. I've also been reading and hearing a lot about how gluten and casein are inflammatory proteins, and they can aggravate - and sometimes be the cause of - all sorts of physical and mental health issues, including depression, anxiety, celiac disease, and fibromyalgia (to name a few). I think it would be of benefit to me to try reducing the amount of gluten and casein I ingest to see if it helps.
I probably won't be going back to Borders before it closes for good. There wasn't much else I would want to peruse. Also, all the empty shelves make me a sad panda.