Amazon offers Prime members the Lansky BladeMedic Knife Sharpener
, model no. PS-MED01, for $8.99
with free shipping
. (Non-members can spend $35 to qualify for free shipping; otherwise, it adds $6.51.) That's the lowest total price we could find by $2. It features diamond tapered rod for reconditioning, tungston carbide and ceramic rods with 22.5° angles, and a serrated ceramic sharpener.