We buy the 'wee wee pads' brand at tractor supply. We get a box of 100 for $20. Great quality too! We tried the 'hertz' brand at tractor supply and the brand wal mart makes...hated both! We belong to the club wee wee thing too. You buy 9 and get the 10th package free. The info is on the side of the box/bag. We love going in tractor supply. They are so nice and affordable in our area. Here is a pic of the brand:
http://www.1800petmeds.com/images/pr.../10860_420.jpg