As one of its daily deals, Best Buy offers the Remington Precision Nose, Ear & Eyebrow Trimmer, model no. NE3560, for $7.99. Opt for in-store pickup to avoid the $2.99 shipping charge. That's the lowest total price we could find by $7. It requires one AA battery, included. Deal ends today.
There's a less expensive way, and then there's the way that works for you. The two may not be the same.