Clearly Steel Bullet Pouches are dropping from campaign at rates that outstrip demand at least on Ifrit server.
Currently 37 pouches for sale and the price has fallen to 10k/pouch. I expect it will fall further in the next week as people are still doing tons of campaign. Unfortunately it kills the market for some alchemists, but there obviously wasn't a big market for steel bullets anyway.
I guess whether the price will get so low it will kill the brass bullet and iron bullet market. If it drives those prices down by comparison, it will be hard to make a profit. Low level COR's still need those bullets but higher level COR's will be just as well off shooting COR and Steel bullets for farming and pulling and the like.
It's going to be an interesting couple weeks to see where these things go. I also see the pixie weapon prices falling pretty soon since the mats to make them are dropping in price as 30-50 of them enter the AH at a time from campaign. Still won't make the Fane Hexagun worth it, but I'm interested in the RDM sword and RNG Bow.