I would wait until the next DeepDiscount 20% sale. You can get each volume for $17 and some change, or they sell all 4 volumes in 1 bundle which would cost you about $71 total. For all 4 volumes that aint bad at all. And also they offer free shipping on all orders. I got the first 3 volumes this way, and I will hopefully get the 4th for cheap when the sale comes back around.