Ordering About FairyLand full sets, stock and ordering

Of all the companies I've been investigating in the last few weeks for my first resin girl, the one that has charmed me most consistently looking at their past releases is FairyLand.
I know for certain I'll want to order a full set for my first and I had a couple of questions:
-Is pre-ordering during release events the only way to acquire a full set from them? (the official store specifically, since I live in Europe and the extra cost from resellers/partners will have a significant impact on taxes and the simulated shipping seems to be higher on those as well) or have they've ever had stock of their new releases after the production of preorders?
-Looking at the dates of their promo videos on YouTube I've deduced that every 2-3 months they announce 1-3 dolls and they're up for preorder for around 1 month, am I right?
Thank you for your time.

 

Thank you! That's exactly what I wanted to know
And no shame, I actually made a list of all the releases with date, type and name from the YouTube channel videos going all the way back to 2018 to see if I could recognize any patterns

 

Oooh thank you! Will definitely stalk that account, really looking forward to the next announcement

 

Another couple of questions...
-When you order one of the extra heads (that have open eyes of course) with makeup do they come with eyes or does one have to remove the eyes from the original to put on the other?

-I know they vary a lot between models, but how do you feel about the unpainted accessories if you've had them/seen them in person? would they work just like that even if less beautiful or do you think you'd have to finish painting them yourself?