To show availability of air tickets on system discount, Leo Burnett, Hong Kong compares their cost to post transfer.
The live parcel post
Chinese airline Evergreen Travel offers tickets for reduced prices. Advertisement makers Chinese Leo Burnett have compared the price for these tickets to cost of post transfer and have informed on it in the form of a slogan: "It is cheap how to send itself by mail!"
The erotic parcel post
Unique question — why all people sending by mail, should be naked? They not naked — they paper, canvas and wooden (as letters and parcels).