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Back in 1986, I bought a portable CD player. It cost $250. The slightest bump would make it skip. It had an heavy external battery pack, that took C-cell batteries. It would drain the batteries in a few hours. Now you can get a CD player for $10 that is far better than that CD player that I had. So, it wouldn't surprise me to see an e-ink reader for $30 in the next few years.
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