If you're interested in acquiring the recipes for
Triple-Reinforced Mining Bag
Royal Scribe's Satchel
Luxurious Silk Gem Bag
Then you will have to do the 4.2 dailies. Each of these items are now available to me after I acquired 300 marks inside the Molten front the other day which thus allowed me to complete both Druids of the Talon and The Shadow Wardens questline. The vendors appeared at Malfurion's Breach after I completed both however the items are restricted until I/you complete Filling the Moonwell as you can see by my comment in each individual wowhead link for the bags.
Get going at the dailies when they hit live if you do want the bags!