This is a very common combination for mages, because they are cloth. With these two professions, Mages will still benefit while leveling because they can develop their own armor and wow gold. On higher levels, they will be able to manufacture the gear pre-raid and also during the raids, they will be able to learn BOP (bind on pick-up) models which they are entitled.

A mage may also adapt the production of parts that will improve its equipment such as embroidery for pants. If you want to buy those of another as it would cost you carpet of gold and precious, but if you're a tailor you it will only cost you two threads Ethernium. Same for improvements cape you can do for yourself. Enchanting profession is also very useful for a mage and cheap wow gold. Mages can use it to enchant their equipment easily, disenchanting all unwanted and unnecessary items, which of course they can sell, use for their own use or enchants to level up tailoring.

There are also ring enchants enchanters can put on their rings such as 19 spell power. It is also nice to be able to enchant all your songs to other devices and that might be delighted, because in any other case, you'll pay for it, and the carpets are quite expensive. A free Mage enchants will not perform as good as the material that completely enchanted.

With alchemy and herbalism is nice for all the characters and the Magi are no exception. Since they are the top damage dealing casters they use flasks, elixirs and potions of Spell Power. These treats are quite expensive on the auction house and having these two professions Mages will not just save up some gold and world of warcraft gold, but always ready for battle with their stats more and more stimulated. Another cool thing for a Mage buff will certainly be the life blood which they get with herbalism. For a mage who has not a single healing spell, it would be great. Life blood of the Mage will heal quite a few over 5 seconds and can be used when your tank is invisible or camouflaged.