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#190
My keys for W7 are: One from cheap upgrade from Vista, one was gifted to me by MS regional office when I did some (non-IT related) work for them and one was from a used computer my half brother's son sent to me from Switzerland where they live. All 3 are retail, Ultra versions. So total cost for all 3 is about 15 Bucks (actually German Marks at that time) not counting full price I payed for Vista.