OXA Home via Amazon offers the DBPower USB Waterproof Borescope Camera for $14.99. Coupon code "JQPVZRF8" cuts that to $9.74. Plus, Prime members bag free shipping. That's $5 off and the best price we could find, although we saw this for about a buck less three weeks ago. This 16.4-foot long borescope camera features a built-in LED light, 1280x720 (720p) resolution, and USB port.