Walmart offers the Braun Mobileshave Washable Travel Pocket Shaver in Blue for $14.97. (Amazon charges the same with free shipping for Prime members, and Target has it in Red for the same price via pickup.) Choose in-store pickup to dodge the $5.99 shipping fee. That's the lowest price we could find by $4. It's powered by two AA batteries (included) so you can use it in the car, at the gym, on a plane, on a train, in a box, or with a fox.

Update: The price has increased at Walmart; however, Amazon and Target still offer it for the same price.