He is soon to be changed, however:
Sorry it took so long to get back on this, but I had to do some research on what was and wasn't possible in the system before I could make a determination.
The SoD quest NPC will be changed to use chronobines instead of doubloons and will buy any of your quest items for 1 chronobine as well. So you'll only ever actually be losing chronobines if you're buying an item you've destroyed or lost in some other maner.
It's important to note that he won't purchase the combined pieces, only the individual quest rewards.
-Ryan, EQ Lead Designer
The full thread is here.