If you are at your local compusa look for any bundled book sets like Windows 2000 training kits. If they are not priced with an explicit price tag they may ring up at .01 Some cashiers will not accept this, and will ask the manager for a price. Others just don't care and will let it go. It helps to buy other things with a credit card, so they don't have to think about the numbers adding up.
YMMV
YMMV