So i know this doesnt help you now, but this is 100% normal. Every time in the history of the game they have retired a currency(tomes, scrips, whatever) the exchange rate has been 4 to 1. Roughly 6 months from now when 5.4 drops they will retire phantasmagoria tomes, switch allegory to uncapped, and introduce something new(say... tomes of prophecy). The same girl in mor dhona will offer to switch out your phanta's for allagories at a 4 to 1 rate. Oh, and that week a few posts like this will appear on the boards from people either upset they can no longer spend the retired tomes, or unhappy with the exchange rate. Elidibus may have had a point.