LightInTheBox offers the Neje DK-8-KZ Pro 1,000-milliwatt DIY Laser Engraver for $59.99. Coupon code "FW5LITB" cuts that to $54.99. With free shipping, that's tied with last week's mention and the lowest total price we could find by $18. It features a blue and purple laser head and USB; it can engrave wood, plastic, rubber, and leather.
Note: Uncheck "Add Shipping Insurance to your order" during checkout to remove the 49-cent fee.