@dfk41 - I also have a super early bird model. I’m not planning to sell it, unless… I eventually buy the Duo (or hopefully the Uno :-) if they decide to not bother with the filter burr, take a few quid off the price and fill in that box with styrofoam.
Out of curiosity though, why are you after this specific model? I mean, whether it’s made in 2018 or 2023 surely it’s still a Niche Zero?