Since the BTC transaction fee is 0.0001 BTC, here are what transfers will cost in the future:

$1,000 per coin = $0.10 transaction fee
$10,000 per coin = $1.00 transaction fee
$100,000 per coin = $10.00 transaction fee
$1,000,000 per coin = $100 transaction fee

Honestly, if Bitcoin goes to the 6-7 figure mark, I don't see how people would be willing to pay these fees.  Especially for everyday transactions.  And considering there aren't enough Bitcoins for everyone in the world to own even a tenth of a coin. Comments?