Huh? Following the Wikipedia link to the Swedish page, it turns out "feldsalat" is called "maché" commercially in Sweden, it's really a standard thing to find in the produce corners. See [1] for instance.
Yes, you're right. My wording was a bit stronger than intended.
It's certainly available, but not as popular as other types of lettuce such as iceberg, romaine or cosmopolitan. To the point that I didn't know what it was and always looked past it before living in Belgium.
