I was attempting to generate an estimated mapping from Indiegogo order #s to arrival date.
I'd claim there's no useful relation between Indiegogo backer id:s and delivery dates. The devices are neither built nor shipped in numerical order. For practical reasons, the factory prefers doing larger batches of things before smaller. This is why all japanese units (the most common variant) were made and delivered first, regardless of their backer id numbers.
The keys caps are laser etched, so from a manufacturing perspective, all keyboards should be the same, except for which design file is loaded into the laser etcher, but, again, the factory prefers to etch the more common variants first. It's probably a bit more efficient to load the etching machine to capacity with blanks and etch them all with the same patterns, compared to etching a few of this and a few of that, so probably, the less common variants requires a bit more time and manpower, and, for that reason, costs a bit more to make.
Once devices are built, they're going through quality checks. Some devices passes, while others will need smaller or bigger fixes. This adds further randomness to when anything gets finished. Also, how long actual shipping to each backer takes, will partially depend on local factors. If, say, PostNord, has problems, that might delay (some) deliveries in Sweden, but not in, say, Finland.
My own backer id is in the 600's but that doesn't matter. My keyboard layout is among the least common, so it wasn't eteched until all the more common ones were done. That's why I'm still wating for my Cosmo. It had been no different if my backer id had been 1.
