Justlisten,
If you have the obi (or sometimes on the back side bottom right of the cover), you'll note that they ranged from roughly 1500 yen +/- a bit in the late 60s to 1800-2500 yen in the 80s. All media (books, magazines, records) had artificially high prices at the time because of a byzantine set of regulations and distribution practices which meant that costs were high so prices were high. Enforced capitalism with socialistic aspects.
If you have the obi (or sometimes on the back side bottom right of the cover), you'll note that they ranged from roughly 1500 yen +/- a bit in the late 60s to 1800-2500 yen in the 80s. All media (books, magazines, records) had artificially high prices at the time because of a byzantine set of regulations and distribution practices which meant that costs were high so prices were high. Enforced capitalism with socialistic aspects.