> Since Prompt 3 will inevitably be followed by Prompt 4 which won't be a free upgrade, $100 seems like a lot to pay. Mind you, if you buy it and it takes them

> Since Prompt 3 will inevitably be followed by Prompt 4 which won't be a free upgrade, $100 seems like a lot to pay. Mind you, if you buy it and it takes them more than 5 years to release Prompt 4 then you'll come out ahead compared to having subscribed. That's even pretty plausible, given that the subscription revenue means that they'll have far less motivation to release a whole new version to get the revenue from new purchases. (In fact, the incentives now cut the other way -- they're motivated to keep improving the existing version in-place, because they'll probably lose subscribers in the process of switching to a new version.)