I suspect this has to do with their prices. At $50, OmniGraffle was one of the most expensive iPad apps I spotted in the app store. I think iWork apps being $10

I suspect this has to do with their prices. At $50, OmniGraffle was one of the most expensive iPad apps I spotted in the app store. I think iWork apps being $10 each acts as an anchor. At $50, I have to ask myself whether I'll really use it. Unfortunately, these offers leave me with a net-negative feeling. Money back guarantees remind me of mail-in rebates, which work through the power of procrastination. At least mail-in rebates don't make you explain why you want your money.