My father used to tell me that all the time. Words to live by.
Well, what I learned today, I want to pass along and share.
You know that Ctrl-right-click will link n item to chat, and that Alt-roght-click will let you buy a whole stack or let you specify an amount. Well, TAB-right-click will auto-refill the partial stack you have! Lets say you are a Prospector and keep a stack of "Lump of Coal", but you are down to 12 and wanna refill your stack to the max (100). TAB-right-click would purchase 88!