If you were to go to an Apple store in Japan, then you could buy a "mystery grab bag" that may include a MacBook Air. The bag itself costs $300, but you have no idea what's actually inside.
This isn't exclusive to Apple either. Stores all over Japan sell what's called "Fukubukuro" near the holidays, which translates literally to "lucky bag."
While many of these bags are filled with cheap, fun goods, you won't find many products at the Apple store that will run you less than $30. As a result, these bags could pay for themselves.
Then again, though, some Japanese shoppers might spend $300 on a grab bag and walk away with nothing.