Sensible option: Harry's, $15 
Splurge option: The Art of Shaving, $236 
Why dad needs it: Unlike your scraggly ass, your father knows the importance of keeping up a clean appearance. But if he's stuck in the past using disposable razors and cheap shaving cream, help him upgrade with a set that'll introduce him to the modern era of grooming. Spend as much or as little as you'd like, but ultimately it's for your benefit. When your girl sees your dad's face, she's imagining what you're going to look like in the future.