I was in Hawaii for two weeks in June on my honeymoon.  A week in Maui and another week on the cruise ship visiting all the main islands.  I personally thought Kona coffee was a bit overrated.  I did pick up some Kauai coffee (blue bag)  while I was out there as it was more reasonable priced and they sell it at Wal-Mart.  I would hardly call it super expensive.  The coconut caramel crunch is very very good!  
Dunno if the coffee is really worth trading games for.... and a bag or two is definitely not worth the value of Bonk 3 or Super Star Soldier.  They have their one website and ship coffee all over.  Not trying to ruin your chances at a trade, but just stating the obvious.