It has a direct correlation? Go to the TP and look at how many ags', dclaws etc and compare it to the supply of elder mauls. While I know not everyone likes raids, I feel like it keeps up with the economys demand enough to where there aren't fourty of them like the other items and there are still alot of options in the pkp store to still be profitable.
Okay, I agree that there is correlation between the actual number of items in the tp, I mis-stated my previous reply. What I meant is essentially the items put into the pkp shop don't depend on how many of that item are in the tp. Additionally, what would be so wrong with a system that slowly introduces more elder mauls into the game(yet faster than raids). If anything, it would regulate the prices of it. Every week the price of elder maul variates by ~10-20m.
TLDR; It's not a bad thing to regulate the price of the mauls without introducing too many into the market.