So this is what most ppl don't know, but:
+ farm 35 material token
+ go into dragon express
+ buy the exalted/storm weapon stage 9 chest
(If ur main is sitting on those token, buy the chest with them, bc the item is account bound)
+ turn the weapon into aransu 9
+ evolve aransu 9 into gc3
The only expensive thing there is the empyrian stone which u need to get from exalted 9 to aransu9. But if its ur alt, it shouldnt bother u that much, while new Players get the new weapon from Story anyway.
Sure, its a way around while others get it for free. But better than nothing, if u want to go on with ur alt.
( also: if ncwest decides to bring a 1copper-gc3-chest to the vendor, just send a ticket and ask for restoring ur materials. Everyone got three tokens half a year, which allows u to get such a request done. Doesn't cover 10+ alts, but at least: better than nothing. U can do all the weekly stuff with exalted9 too. So there is actually no real need to go further if u don't want to)