Nope, the Ordon Shield is one specific item that you get in Ordon, and once it breaks you can't get it again, and the wooden shield is a different shield that you can buy in very different places, such as the Death Mountain, the shop in Kakariko village, etc. and well, about the rupees... they're not actually an item that you can use... well, they are actually, but not in the sense of tloz's items...