I intended to buy a boot liner before we went away last time. Main reason is to prevent scuffing of the boot carpet. I didn't think of it until I was packing the boot the night before. As a stop gap I went to Bunnings and bought a heavy rubber mat ($50?) and cut it to suit. Actually works extremely well. Heavy enough not to slide around and probably deadens a bit of sound as well. Doesn't have the lip but I don't really need it as I've got a ute for carrying crap around. I'm not going to bother with the fitted one.