$9.99 Good Strategy Bad Strategy: The Difference and Why It Matters
$9.97 Gyros Carbon Steel Wire Gauge Mini Twist Drill Bits | Includes 12 Micro Carbon Steel Bits Size #59 with Clear Storage Vial | Use with Pin Vise, Screwdrivers, and Rotary Tools (45-11259)
$499.99 Makeblock xTool D1 Laser Engraver with Rotary, 5w-7.5w Output Power Higher Accuracy Laser Cutter and Engraver Machine, 0.08*0.08mm Compressed Spot, for Acrylic Wood and Metal 432*406mm (17"x15.98")