i wont update iwork 9.3 to 10.7
iWork 9 to iWork 10 is not an update. It requires an upGRADE, i.e. you need to pay for it. Just go to the Mac App Store and buy it. You only need to buy the components you need.
(I was going to make a snarky comment like, "But WHY won't you update iWork?" but decided against it. Sort of...)
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