MacMall offers the i-Rocks AC USB Travel Charger Adapter for iPhone and iPod, model no. IR-1050, for $9.99. This $9.99 mail-in rebate drops it to $0. With free shipping, that's tied with our mention from last fall as the lowest total price we've seen for such a travel adapter. (It's a current price low by $10.) It's compatible with iPhones, iPods, and most USB-equipped devices. Deal ends June 30.