As promised, variable pricing has now been implemented at the iTunes music store. Already, we’re seeing most of top 10 singles and 33 of the top 100 hitting the top price-point of $1.29 (encoded as DRM-free 256kbps AAC). Interesting as Amazon’s uncomfortably similar top 10 list has all these tracks priced at $0.99 (encoded as DRM-free 256kbps…
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