Best close focusing micro/macro lens for $220 or less for Nikon D40?

digiProDudeAce is right. If you have a low budget, don't blow your wad on a cheap macro lens. Just get screw on close up lenses (diopters) and have fun with macro with the lens you already have. They will probably be about as good as a crappy macro lens and you will be able to save for a real lens faster this way. They will maintain 100% full autofocus with your D40, also.