Fuji and Sakura had many many labs that processed this film all over the far east. A roll of Kodachrome in 1959 was $10 processing included, and a roll of the Japanese variety was about 1/2 that or less. That was a lot of money back then.

When K-14 came out, Fuji and Sakura bailed out in favor of E6 even though Kodak ended up giving the patent away.