According To the wiki site
nq: steel ingot x2
hq1: tin ingot x2
hq 2 : mythril ingot x2
hq 3 : darksteel ingot x2
Wiki is a very useful site , use your head if this only gave tin ingots why would it sell so fast for this much?
If Stock and Awe was the driving market factor, you wouldn't see the same name buy up more than 1 at a time.
Hence Myori is spot on but the C. Ops. and Smithing club naturally help keep a steady price.
