If you want, you could print out the signs yourself. This is a pain in the ass, because most of us don't have printers that will print stuff this big. The best option is to have MYGRAFX print your sign for you. Why? Well, first of all, they print 'em on super-heavy vinyl stock on a bitchin' professional press for far less than other printers. Second, Ian Sagnotti prints most of the visionary art you see around here, and he's down with Buy More Stuff, so since you have to Buy More Stuff to DO Buy More Stuff, you should Buy your Buy More Stuff Stuff from Mygrafx!
Bottom line: print and laminate these files
Put on sticks. You are now ready!