Yes, it's expensive -- but all textbooks are; you'll likely find 'em cheaper on Amazon. I bought my textbooks here for the sake of convenience, but I think I'm just going to buy them on the Kindle/iPad next term -- cheaper, and I won't get scoliosis by the end of the year lugging all those books around campus!
With that said, the rest of the bookstore is just okay. The stationery section is rather limited for a campus bookstore, so I'd suggest going elsewhere for your pen and pencil needs. On the other hand, if you do use an iPad, they have a TON of cases -- certainly one of the larger selections of iPad cases I've seen anywhere, including the Apple store. Lines inside the store itself move very quickly, but for some reason the Web pickup line moves as slow as a slug on quaaludes.