This deal has ended.
Buy.com offers the Cables Unlimited BatteryBoost for Blackberry Bold for $9.99, $60 off the list price. Plus shipping is free. The next-best price we could find was $30.86 at Amazon.com. This add-on slides onto your Blackberry and, whether charged or not, gives a boost to your battery. No cables are required, so this is especially convenient for travelers. There is no sales tax (except CA, MA, MD, NY, and TN).