Its a bit absurd that heineken sells their 0.0 beer for just as much as their regular beer. Also, you seem to have quite the selection of na beers near you :)
Well, it's not necessarily cheaper to produce (either by carefully controlling the alcohol production or doing some sort of "dialysis"). It's true they should be cheaper once you think of taxes, but probably the don't want to cannibalize their alcohol sales by outcompeting themselves in price.
It isn't absurd at all, unless you think all products should be sold on a cost-plus model.
Ironically enough, Total Wine has amazing selection of NA beers. (If you are lucky enough to live close to one of the stores)
Why? It costs more to produce.
tax
You think there should be more tax on non-alcoholic beer than beer with alcohol? Should be the other way round.