Wal mart seems to have the best deals so far. I picked up a few more things yesterday. The best time to buy though is after school starts and wait a few weeks, then Halloween and Christmas stuff comes in and they want to get rid of the school stuff.
I don't shop Target, so I don't know what is going on there.
If you have a Staples, check out their ad. I got 5 reams of loose leaf paper fro $.05 total with another $5.00 purchase (got other sale supplies that were not considered "extreme" deals).