Having worked in shipping and receiving, I think that box is too big. When you initially pack the box with filler paper it looks good. Once it's in transit and boxes are stacked on it the paper looses its density. I'm assuming the pads were all the way in the bottom
Try these two threads
https://www.autogeekonline.net/forum/auto-detailing-101/110329-flex-3401-vs-rupes-mille-makita-p5000c-those-wondering.html
https://www.autogeekonline.net/forum/auto-detailing-101/110361-anyone-else-order-makita-po5000c.html