Wolfgang again posting from my Dad's account as it's what's handy. :) I went out to Hobby Lobby today as they were having a paint sale, happened into K-Mart and saw some of these:
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This is about a foot long. I dunno how big the Ghost is supposed to be, but this seems to be the best choice for 28mm.
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Not StarWars but Miles of Tomorrowland. (I'm guessing a Disney TV series) This one is huge at about a foot and a half long and has a 'child' ship that docks in it. The interior is hollow, so you've got a shell to detail and play in if you're into that. It could be a large yacht/passenger ship for any number of scales.
Also odd that the Amazon price is half that of K-Mart's
And some of the more interesting ships for gaming potential from an Amazon search of Miles of Tomorrowland:
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Just thought someone might find this useful.