It seems to me that a seller of art suppliers would be an expert in packaging their products for shipment. Not true.
Recently, I purchased a ruler from an Amazon partner and it came in unusable condition.
What is shown is that the ruler is coated with residual glue from the tape used to affix it to the packaging material. This could have been avoided simply by wrapping the ruler in a sheet of paper before applying the tape.
I informed Amazon and they refunded my money. As for the supplier, who knows?