Everyone has been talking about a possible Led Zeppelin reunion for 2017. Catches the eye doesn't it? That's why we ask the  following question. What if retailers marketed their products like the Rock Albums were marketed and promoted? No, we're not talking free black light posters here, or are we? Listen in and discover....   What they share in common. Where they differ. What strategies come from Rocking out.   Tip of the week. Perception of value will control potential profits.