Lower Fare Guarantee
When a new lower fare becomes available after a ticket has been purchased, customers are entitled to a Lower Fare Guarantee refund within the following guidelines:

* The lower fare is available for the exact itinerary previously purchased.
* No portion of the reservation has been flown.
* This policy does not apply to transatlantic or transpacific travel.
* Lower Fare Guarantee refunds are not available for online ticket exchanges. Certain promotional fares may be excluded.

We will deduct a $150 change fee and apply residual funds in the form of a US voucher. Additional rules and restrictions may apply. Call our Reservations Desk to seek a Lower Fare Guarantee.

So yes you can get price difference "refunded" as long as it's not a TATL itinerary (or TPAC if the China service ever begins), with the difference (less the $150 change fee) in the form of a travel voucher. If the fare difference is less than the $150 change fee, the change fee will more than offset the fare difference.

Jim