Nice gameplay and story.
Probably if you're thinking on expanding or improving this game, I would recommend probably to add a bit of puzzles for the player to solve using some of the objects from the other storage. For example, to reach the high place in one storage the player needs to use a ladder found in the previous storage, or probably use crowbar to open a stuck locker etc.
While playing I was actually keeping some copy of various object that might seem useful, since there's the option for not selling the objects.
I had fun playing this game. Nice work!