[xkmkmlmx]

I don't think there is any Ghibli box sets available. I know there was a Japanese Miyazaki one a long time back. Surely out of print and hard to find (and not complete).

You would probably be better off just buying them individually anyway, as I am sure you can find a lot of them for cheap. Be careful though as some are out of print and people want pretty high prices for the official versions (such as Totoro).