Repair parts fall under the same banner price tag. As early as 1963 in my memory . Heater fan motor for a Caddy, $100+ same part in a box with a different P/N for a Chev. $45
And in 63 , $100 was a lot of money even for a Caddy owner.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.