Your laptop may already have a decent webcam. Most do. Which is why Amazon’s Prime Day is basically a chance for vendors to unload quality webcams with a forklift. I’m not really exaggerating. The Iskovi C28 webcam is a 1080p webcam, which has become table stakes for the best webcams for your PC. But the Iskovi C28 is just $13.59 on Amazon for Prime Day — that’s a whopping 82 percent off. And it gets better: Amazon will take an additional 8 percent off if you buy two. Yes, that’s insane. What’s even crazier is that this webcam — which, admittedly, I haven’t reviewed — has a fairly uniform four…