Securing a retail location for this wouldn't be a problem at all, I would just think that with the complacency of the average consumer - especially if its going to be a piece of gear less than $100 - an online storefront would be ideal.
I've been looking into this quite a bit. I have contacts in China and Hong Kong for all sorts of iPod/iPad, iPhone and cell phone accessories, as well as things like DVD players and watches.
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