Hi, I am about to mount an effort to sell a US Fender Precision. As this is not a bass of insignificant value I want to package it right. I'm going to ship it in a hardcase, but what do I put the hardcase in? A bass I recieved a while ago came in a cardboard box that fit the hardcase well. Apart from guitar shops, where do I go for these? Where does everyone else get theirs from?