That baffles me. If smaller payments are easier, she should put those small payments into the "CS6" fund, until she has enough money to make the single large payment. And, if she's making so little money at her profession that she can't handle a single lump-sum payment for CS6, why is she willing to pay a premium, rather than keeping that extra money in her pocket? The subscription model is only cheaper if (a) you are a habitual upgrader, or (b) you only use the stuff once every several months and can just pay for the license for the one month or so that you'll need it.