It has been said variously on forum and info by producer that self crafted weapons/armor will be at least as good and most even better than the purchased ones.
OK I am crafting for instance staves. I am only level 7 but anyway, I am crafting staves for self and alts. The staves I craft with whatever is available to a lvl 7 who is always looking out and searching for materials as well, well the staff I crafted for level 4 has damage of 13 for a level 4. The staff you can buy at weapon vendor has damage 20 for a level 3!
Same goes for amor, bought on is far far better than homespun. What level do you have to be for crafting to be worth it?
If I add up what I can sell the materials for and what I save in making the stuff shows that if I sold the mats I would have a huge amount of more money left over even if I bought the items