Well, when you seek an item, it sets it to bulk price.
Say I want to buy a certain shard. My asking price is 300. That's not 300 PER shard. That's 300 for however many I offer to buy. You may think this doesn't work, but I just successfully got a bunch of wind crystals for only 3k. Most hilarious thing ever.
Oh late at night, how you give me the GREATEST ideas.