I think 'slicha' should also be 'excuse me' in the translation as well instead of just excepting i'm sorry
So for Hebrew speakers is this the construction used to say "not for sale" in everyday language?
no . but the weirder the sentence the more you'll remember it. fluent forever book and website give a good & funny explanation of the science behind memory and language learning, and for a peak at the most outrageous duolingo sentences, search "duolingo is the devil" on YouTube.
Also streetwise Hebrew channel on YouTube has a video about a cat on a missing, please find me sign, when his parents split...