Dont sell the items you get from disnenchanting is all I can offer. Also unless your rich (500-600 some gold) I suggest taking up a gathering skill to support enchanting.
I frequently sell the mats I get from disenchanting. It is a good source of money. I have found a good way to level is offer free enchants as long as the mats are provided. That way the cost is nothing for you and you still get skill ups. This has worked for me at least. I have tailoring as a secondary skill also so I am able to provide some items to DE for dusts and a few shards.