OXO Fashion via Amazon offers the DBPower 6-LED Borescope Inspection Camera for $18.70. Coupon code "P3VZOTK4" drops it to $12.15. Plus, Prime members bag free shipping. That's the lowest price we could find by $13 from vendors with sufficient stock. This waterproof borescope features a 0.34" camera head, 16-foot cable, 1280x720 maximum resolution, and built-in LED light.