With orders of $25 or more, Amazon again offers Prime members the Panasonic Ear/Nose Hair Trimmer with Rubberized Grip, model no. ER415SC, for $6.99 with free shipping. (Non-members can spend $35 to qualify for free shipping.) That ties our mention from two weeks ago as the lowest total price we've seen. (It's a current low by $4.) It features hypo-allergenic stainless steel blades and up to 90 minutes of operation time.
Note: This item is part of Amazon's "Add-on program" and can only be purchased with an order of $25 or more. Also, although Amazon lists up to 30 minutes of operation time, Panasonic lists 90 minutes.