Protec Laser sights

Last show I was at, some dude had 1 for $35. It was a demo, but still dirt cheap. Within 3 minutes, it was gone. So I came home, and found the cheapest one on ebay for $60. I just got it in the mail yesterday. It's pretty fukkin cool! It has a tactical light, a strobe light, and the laser. Hard as balls to sight in accurately though. Then again, I only played with it for a half hour, then just got fed up and wanted to burn some ammo. So I shut it off and started to shoot.
https://cgi.ebay.com/NEBO-5578-PROTEC...0099%26ps%3D54