MidnightBox offers this Electric Hair Razor with Ultrasonic Vibration in Blue or Black for $17.49 plus $3.99 for shipping. Outside the price below, that's the lowest total price we could find for such a razor by $7. It features a heated blade combined with ultrasonic vibration to help produce a clean and easy cut. Deal ends January 29.
Note that this item will be delivered in three to five weeks.
A close price, Beauties_Factory via eBay has a similar razor for $21.61 with free shipping.