The question is, are the number of distinct trip prices lower or equal to the number of distinct trip possibilities?

If the train is JR Kyushu's Dc72 (which I came across when writing the Hump-Nosed Trains diary), you must be in Kyushu/Japan? At any rate, when I check JR Kyushu's English train fares page, prices are given for specific relations with km distances displayed, but the pricing is clearly zoned -- for example, 1080 yen for normal trains in the 50-60 km range.

_{*Lunatic*, n.
One whose delusions are out of fashion.}