aimpoint

Hey guys,
I would like to use the type of red dot and/or holographic sights like aimpoint and eotech make. The problem is this stuff is expensive. For one reason because they are made to keep working under conditions I for one will never be using them. And all I want is the specs like parallax free and all the other advanteges they offer. So is’nt there any one yet producing something like this; good quality for shure but I do not need to be able to dive with these things or anything like that. Let me know. Thank’s.
Ted