Ever buy 100 of something from an NPC?
How about 250?
Is your mouse clicker worn out from all that clicking?
Wouldn’t it be nice to have an way to buy or open something by volume?
*buy x amount (enter number)
Longer mouse life and preventative surgery for your index finger
To ensure no accidental purchase of an obscene amount of Ice Runestones maybe a confirmation prompt (e.g. Are you sure you wanna blow 199 gold on that?)