I agree the box looks "unprofessional", but on the other hand, what is wrong with reusing a box? In the long run, I would think it is better for everyone, less costs, less junk in a land fill, less resources used up the make a new one, etc.
I won't comment on the receipt, because on my monitor it is a little too small to see what it says.
The pied is awesome. I love low-white pieds.
I too have re-used boxes. But not Sharpied to hell, and corners falling apart.
Its one thing to be "thrifty" and re-use a NICE snake box.
Its another thing to scribble the box to death and pray that the corners dont bust in transit.