TomTop offers the Meterk High Speed Mini USB Laser Engraver, model no. DK-8-KZ, for $72.99. Coupon code "MTKE13" cuts it to $59.99. With free shipping, that's the lowest total price we could find by $33. It features an adjustable blue laser head, automatic positioning, and an image resolution of 512x512.
Note: The countdown timer on the product page does not reflect an actual expiration time and resets daily.