I deal with boxes!
Some are very small, others quite big, they come in all shapes and sizes some are even bound and strapped. I've even get the odd box with a hole in it or that has been squashed, but heck people are desperate for boxes and I have plenty of boxes (usually about 85 a day, thats a lot of boxes). It's easy to tell when a box has been looked after because the previous owner has kept it in good shape and provided plenty of reinforcement.
The most annoying thing is when someone thinks I have their box when i've never even seen it before. I usually take extra special care of those boxes when I do eventually get them because I know how valuable people's boxes are.
My only forms of payment is a signature and a surname, no other payment is required or accepted
In short, I work for Toll Ipec.