Yep, worth every freaking penny. Overated, sho 'nuff, so was everyone else at the time. (Good god, there is still no creature alive that's worse than some 60-year-old Dead head, go figure) But Zep were more than merely competent musicians, extremely simple but exciting in concert and on record, and they breathed new life into the guitar-bass-drums format that was being beaten into the ground by lesser entities. Zep gave every kid permission to rock out, and brother did the kids need it!