Why is converting Saronite Ore to Titanium Bars so profitable on many servers?
My idea is that it tends to be a money making strategy that requires multiple characters because the 2 professions, Mining and Alchemy are not a typical combination you find on a single character. Anyone got a Miner/Alchemist? Probably not many. Therefore this is easiest for players with both a miner and an alchemist. If you have both, look into it. There is good money to be made from transmuting and selling on the AH in stacks of 3 and single bars.