Ian, your comic shops won't be getting Star Trek books from Diamond anymore. The distributor wasn't getting orders sufficient enough to justify carrying them any longer.Usually, Australian specialist comic stores and SF bookstores order (expensive: MMPBs @ approx. $AU 18 in Galaxy and $21 @ Minotaur) air-freighted ST books from Diamond, then top up supplies three months later when the Simon & Schuster Australia brings over a (cheaper, MMPB @ $15) sea-freighted pallet of stock for local distribution.
I think Treason might be the last Trek book Diamond has actually distributed. If they didn't, then it's definitely A Singular Destiny. Everything after that MMPB was cancelled. Treason, because of the higher price point, might have been spared the axe; it would have needed fewer orders.