Shipping boxes, being unique or not, are out of scope currently. I would not create entries for them. However, in the description for the included item, info about the shipping box (such as the barcode) can be put there.
So, this would mean that 259187 is not permitted, because there is no container for its components besides the shipping box, meaning a "Super Masters Edition" doesn't really exist at all. If those components are to be represented in the database, then they must be submitted as separate entries for each individual item. Correct?
That entry has many issues. But first
Does the entry name exist in either Japanese or English on that cardboard box? I cannot find any photos of the box nor any unboxing videos of this version to see for myself.
Issues with description:
1. Description is taken from or based on some website's listing of the contents and it does not match what is present NOR is it formatted properly for here. Primarily the fact that digital items are listed as being included as physical items.
2. What is "e-STORE"? Is it Square-Enix e-STORE? If so it should be written like so. Also appears to be available at HMV.
3. Being an entry in the Switch game category, it is inferred to be a game, so using a term like "Switch game" is redundant.
4. The particular details regarding the language options should not be present here. I do not know whether the game included is exclusive to this or not (if it has that 25th label present) or if that label is on the retail release as well. But that type of info can be put on the individual game entry if it qualifies for having one.
5. Cushion blanket is not an ideal description unless it is actually what it is called. The advertising is secondary for the name, hopefully there is some BOM on the box that indicates what the name is. If it has no actual name, then we can have a debate as for what it should be called. It appears to be a Plush with a blanket inside of it. The measurements should not be present here. If it is indeed only to be called Cushion Blanket then it
should get its own entry with that name.
6. Book title is wrong. Size, page info shouldn't be there.
7. The box does NOT include digital items. It includes a flyer with two codes.
So the description should be like so (this is an example is false/partial info):
Includes:
• Dragon Quest Monsters 3: Mazoku no Oiji to Elf no Tabi - Masters-ban
• "cushion blanket"
• Dragon Quest Monsters 3: Monster Synthesis Book
• DLC flyer
• purple sticker
DLC flyer has codes printed that unlock
• DLC name 1
• DLC name 2
Square Enix e-STORE exclusive
Sold online as "Super Masters Edition"
And I type all this just so that it is helpful in general with these types of entries, despite the following:
IF that shipping box
does not actually have the entry name on it, then it may not be available to be made as an entry. The picture on the entry right now is terrible and should not be used as it doesn't show anything. It is just some tape and a blank side of the box. At least the side with the barcode it supposedly has should be shown. If the side with the info is the same side as the address, then the address can be removed. If you do not want the address to be removed, you can request that it be done digitally.
As for whether the individual parts should have their own entries, it is as usually, if you want. It seems that both the book and the plush are being sold online by themselves so you certainly can (even now) just buy those if you wanted. If you don't make the entry, someone else will in the future so it really is up to you whether you want to do it.