Not just those, but also Trijicon ACOG, and others, including one that looks like an EOTech but somewhat larger. Actually last I checked you could get the EOTech for about 325-350, unless you insist on night vision compatibility, but that's still mighty high for something for an AK, although not for an AR.
True, true. Yeah, I looked at the high end EOTech. Not really necessary for the basics. Aimpoint makes a decent optic as well. They look the best on M1A/SOCOM rifles.