Buying Glavoid Shells (Leviathan)

I'm looking to purchase Glavoid Shells, starting at 300k each. I currently require [49] shells.
I am open to the offer of mercenary services to tackle, if not all, a significant portion of the shells for a proposed sum. I'm not rich by modern standards, but I can afford all required shells and then some at my listed price.

Please note that I am not purchasing KI pop sets at this time.

Thanks.

Edit: I am usually present if I am online, but will likely be AFK if I'm in Upper Jeuno.