Is this a good deal for a wiring harness?

1966-74 A B E-Body Engine Forward Light Harness 1973 318
I am considering buying this wiring harness that, according to a salesman at yearone, will replace all the wiring under the hood and the headlights. It’s $250. What do you guys think? I’ve never bought a wiring harness before and I know there’s a million options online. Thanks!