I purchased it when it was on sale over BF weekend (US edition)
What I received were 6 large boxes (about 15" x 22" x 16"- though some vary a few inches in size, not all uniform). Inside those are 3 to 6 more boxes which I assume contain the individual issues.
The six boxes take up 29" x 22 x 38" of real estate, in two stacks of three boxes each.
I've only opened a couple of the big boxes so far. IIRC, one had 5 smaller boxes in it, the other had 3. So I expect between all six there will be around 25 boxes with 4 issues each.
I told myself I was going to have to inventory all the parts when the boxes came in, to make sure nothing is broken or missing, but I eventually realized when they did arrive how hopeless that would be. It's going to take actually sitting down with each issues and building it to know if anything is amiss. And that just ain't happening for a while.
Got a Zvesda Star Destroyer to finish, then a Bandai PF Falcon along with some smaller kits to tap first.
Realistically, I don't think I will be able to get much done on this until 2018 BF :cry
Probably not the wisest purchase I made last year.