Admission number order / Limited quantity sale

I’m buying my first dolifie, the new Hatsune miku one and I’m kind of confused as to what the process will look like. What does it mean when it says it will be admission number/ limited quantity sale? Does that mean it will be a lottery? Because I’ve read about those, but I thought since the wording is different than this is something else entirely.

That would be a reference to the on site Dollpa50 sales. where you would get a purchasing cue number ticket, and there being a limited number of dolls available for sale at the event.

if you're not attenting dollpa the after event sale is what you want to look at which will come at a later date.