I do think BS is just what it says...  abunch of Blizz BS!!  I have kept may BSing skill thus far, 260, because I have found the idea of makeing my own really nice armor/weapons appealing but the amount of mony I am haveing to spend in order to accomadate the LvLing the skill is CRAZY.  I try to mine alot of my mats but like was already said the Mithril needed to get past that portion of lvling is Nuts!!  AND i AM SURE THE NEXT LVL'S WONT BE ANY LESS AMOUNT OF METAL AND EVEN MORE EXPANSIVE TO BUY.  I sure wish bizz would correct this major issue.  costing more to make items than what you can sell them for is just wrong.