Note that this furnishing must be placed on 1 of your 5 walls, so if you have all 5 nation flags you will have to sacrifice 1 of them to layout this piece.
I sacrificed the Aht Urhgan flag. Sad, but well worth it after I saw how many slots I was able to free up in my Mog Safe. It Also makes your Mog House kinda empty, but as a guy I'll always prioritize functionality over decor.
Assuming the recipe below is correct, this is maybe 30k at most to make, probably less. For the people considering paying 130-170k for this right now you might want to wait until the price stabilizes.