Looking to mount a light on my Glock as a nightstand gun. I don't need anything super duper ultra mega shine through the guys head bright. Just something compact, reliable and bright enough to see with in the dark. I'm seeing a few that seem to fit the bill for $100. Are there cheaper options than that? A reliable flashlight can be found for $10, what makes them $90 more when they have a rail mount molded into them? Thanks!