I think it's pretty hilarious that people on this site of all sites pretend to understand the mainstream market. Face it, we're mostly iconoclastic nerds of one kind or another, else we wouldn't be so involved in our friggin headphones and amps and stuff. Personally, I expect those new Grado's either will or won't be a big hit based largely on how competently the marketing is handled. There are many, many millions of iPods out there, and plenty of people who own them will be happy to spend $50 on a color-coordinated product that they identify as an upscale quality brand and which sound good to them. Why would anybody expect anything different?
I don't know why people here expect they will fail. I have yet to hear any compelling argument whatsoever. The main pseudo-argument seems to be that non-audiophiles are all cheapskates who will find the looks of them a turn-off. (People used to say that about the price and looks of BMW cars too. How many people who now own BMW's are really serious drivers? A tiny minority, yet many people are happy to pay a hefty premium to get what they perceive as quality.) It's bizarre to assert that a young population that routinely dumps tons of disposable cash on consumer electronics will be put off by a $50 price tag, or that the combination of iPod color schemes with iconic Grado grills that tie them visually to more upscale models is somehow a bad idea. (Do you realize what people pay for a favorite upscale brand of jeans?)
When iPods were new, how many people here thought the iPod would take over the world? Precious few, I'll bet. My guess is that most of the inital commentary was about how inferior and hopeless they were.