Similar to the $10 off $30 that they had at CDUniverse earlier - you can use it up to twice. You can't combine this with another offer. Shipping is like $5 an order, so it's not that great a deal, but could be useful to people.
http://www.toysrus.com/shop/index.jsp?categoryId=2255956
http://www.toysrus.com/shop/index.jsp?categoryId=2255956