Norma doesn't make any .22 rimfire ammo themselves. If I remember correctly, I think RWS manufactures the Norma .22's.
So the quality and pricing of the Norma ammo should mirror that of RWS.
I have little experience myself with the Norma .22's. Not out of preference, but simply because the dealers I regularly buy ammo from seldom has it in stock. This has also caused me to turn into a hardcore Eley man.
As for quality in general I am of the opinion that, when it comes to .22's, finding a brand and batch that your gun likes is much more important than the brand itself, it's reputation or price tag.
This of course could explain it. Ammunition production these days is a worldwide conglomerate and opaque mutual exchange process, and one never knows where the components for one's ammo actually came from. Norma has made cases for Sako cartridges, e.g.
So, it should not surprise me either to learn that Norma has "its" .22 rimfire ammunition produced by some other firm who knows how to do it.
On the other hand, under the German "RWS" brandname, one can also encounter steel-cased (but nickel-or brass-plated) practice ammo (RWS Sport) that is definitely not made in Germany, because the two German factories have no drawing facilities for steel cases - so maybe these are made in Russia and stamped RWS?).
Anyhow, the so-called "Norma 1" is probably produced to similar specifications as RWS' own R 50, I suppose.