Tacklife via Amazon offers its Tacklife 15-watt Engraver for $21.97. Coupon code "4DFGIYI6" cuts that to $15.16. Plus, Prime members bag free shipping. That's $7 off and the lowest price we could find. It features a 5-position stroke adjustment dial with up to 7,200 strokes per minute, a soft rubber handle, two stencils, and four tungsten carbide steel bits. Deal ends January 14.