Hey new here looking for some help

Hey i have a 1972 plymouth duster im restoring id like to know where to get a headliner and dashpad for it for some reason i see all other headliners are cheap like 50-90$ but for a 72 duster its 220-290$ why is this does a 1971 plymouth duster headliner fit a 1972? if so i can just purchase the 1971 summit has for 60$