The PP noted the two most likely options for getting between AKL and GF.
If you want to transfer your own luggage, then you pretty much have to go the taxi route (no luggage allowed on Disney buses). Back in March of 2013, it cost $22.80 plus tip to get from AKL to GF. I would expect prices to have risen, so I would estimate between $25-$30 plus tip.
Otherwise, you can send your luggage via the transfer service. Just note that the luggage probably won't show up until later afternoon/early evening at GF. Then you can get to GF however you'd like using Disney transportation.