Originally Posted by alect
New one AA threw into the mix

they had priced it (approx $8490). They are now saying that pricing may change due to fluctuating exchange rates.
As others have said he exchange rate variation should only apply to taxes and charges. However, you don't say how far in the future this trip is so you should be cautious that there is no a fare increase between now and ticketing. Although they have agreed to hold the res until 7 days before this does not gaurentee the fare.