Newegg offers the Philips Norelco 7100 Hair Clipper, model no. HC7452/41, for $29.95. Coupon code "BFLEAK209" cuts that to $24.95. (Amazon charges Prime members the same price via a $5 off clippable coupon.) With free shipping, that's the lowest total price we could find by $5. It features a double-sharpened cutting element, adjustable comb with 23 length settings, and up to 120 minutes of cordless use on one charge.

Update: The Newegg item is currently out of stock however Amazon still offers it at $24.95 with free shipping for Prime members.