I think that you should try to make the ghosts use each others positions to determine their own, as it is in the real pacman. They wouldn't bunch up, and they could surround the player

Cool. You should try to make it so that each ghost acts differently. Right now, after a while, all the ghosts bunch together and chase you in one group

It would be nice if the price would continue to show while your mouse if on it. You must be using .mouseMoved(), this will only show the price if the mouse is moving and is touching the button, so right now the price disappears right away if you keep the mouse pointer motionless on top of a button.