If the auction price for a good increases to the point where scrolling begins- say an Energy auction goes up to the point where the lowest price visible on the screen is 35 per unit- then it cannot scroll back down; 35 becomes the minimum and you cannot sell a surplus to the store.
I am sitting at the initial "Colony Status" screen grooving to the remix. Guys, I cannot tell you how awesome this is. (Additional props for making it in Java so those of us in the Linux Arm of the galaxy can play!)