This is a small tip for those buying mark of sargeras in bulk to hit honored/exalted for the shoulder enchants. You will save quite a bit of gold if you buy sunfury signets in the AH instead and then spam wtt sunfury signet for aldor equiv [mark of sargeras] because sunfury signets are farmed like crazy [such as the mobs in front of BT] so they will sell for a lot less.
for ex. on my sever i buy sunfury signets at about 60s per signet but mark of sargeras go for about 2g per. which ends up saving me a lot of money since i need over 1500 of them to hit exalted