The Kodachrome processing mailer was $20 mailed to VisionGraphics in Sydney when it was done here in Australia. This cost was included in the roll purchase (around $30). I considered it one of the most expensive, but not the particularly most beautiful films to expose and process. At the time it was preferred over E6 emulsions, which I had not quite 'warmed to'. The period referred to is from 1978 to 1993, around which time my last rolls of Kodachrome were exposed and sent off and a shift made to Velvia and Provia.