The school books section was empty, totally, when I was there.
There are bargains to be had but try to be there at opening time and be prepared to queue. I also was there for 2 hours in a long slow moving line today. It was worth it but I was glad I didn't have kids with me or high heels for that matter!
Also they are closing early because of the queues, I believe 6ish is now the time, sign says 7 but they closed at 6.30 tonight. They close the doors but people inside can still queue to pay.