TigerDirect offers the PayPal Here Mobile Credit Card Reader, model no. 4021, for $14.99. This $15 mail-in rebate makes it $0. (Staples and Best Buy have the same deal, although opt for in-store pickup to avoid shipping fees at Staples.) With free shipping, that's tied with our mention from two weeks ago (although that didn't require a rebate) and the lowest total price we could find by $2. It's compatible with the iPhone, iPad, and most Android devices. This reader supports most forms of payment and features a 3.5mm jack connection. Rebate ends August 31.