Add a number sequence into selling shells rather than a push system.
LET'S SAY FOR EXAMPLE; I have 213,000 trochus and i only want to sell 30,000 to sell something. With the push system i would have to click 30,000 times to sell those shells sense i don't want to sell the rest of my trochus. With the number sequence i can just type "30000" then i'm done.
I don't know if the push system is to promote pay to win kids to buy itunes rather than dig but this system is rather badly planned out with Era's rich economy.