Very simple explanation for why all the containers/labels all appear the same.
Whatever he was using to store things in needed to be redone, plastic degraded, cardboard boxes collapsed etc. Perhaps it was all stored in paper bags, and he wanted to redo it all.
I've seen Robbie the Wreckers shop (Near Port Road, South Australia) first hand, before it closed for good. Had the same issue, wanted to take half of it home, in the end though I just bought what I knew I would use. He had even more stuff, it was organised that not as well as this guy.