Dan, you are somewhat hijacking this thread: what Mr John D. Noll was originally compaining about was that this License had an expiration date, there was never any talk of any money - he never actually paid for it, his employer did, and he was apparently never going to.
And indeed, despite being named a "Subscription" and with this condition highlighted on the main Boomerang page, it has caused confusion before and perhaps we should really discontinue this type of license, despite the sound logic of your initial advice.
But coming back to the pricing, you are of course hand-picking your comparison examples. There are other examples of prices that rose at the same or higher rate. Plus, as we were practically unaffected by the recent GFC, our view on this matter may differ materially from yours. For instance, our rent prices were claiming up at a much higher rate than yours.
Gold comparison was just one of the views. If you believe in exchange rates, then here's another view: US$500 = AU$715 in 2004 at the exchange rate of 0.70, which adjusted for inflation and allowing for other factors ended up being AU$1,300 in 2011, which at the exchange rate of 1.10 became US$1,430. I hope you would not argue that our prices are inevitably linked to AU$, because we are an Australian company.
Anyway, the pricing point is moot, as the prices are self-regulating in a market economy anyway.
Of course, if your consulting rates were the same in 2004 as they are now, then this may seem excessive, but then the problem really is that your consulting rate growth was stalled (or indeed reversed, taking inflation into account) by other factors, like outsourcing and GFC. And so it cannot be used as a baseline.
In any case, if you were to face a scenario where the use of our Boomerang would make you $10,000 of extra profit, would you be hesitating to pay the $1,400 Subscription fee? - that's a rhetorical question, of course, what I'm trying to say is that your scenario is not the same as anyone else's and so you may or may not need Boomerang, depending on what you are doing. And if one year you do need (and buy) it and then the next year you don't need it, then this issue of the Subscription usually comes up. But then the next year you may need it again, as has happened before and will probably happen again, and then you come back and purchase it again. And knowing your modus operandi, I would fully expect you to drop it now and then re-purchase it again, when a new requirement comes your way. Because when you purchase it against an existing requirement, _IT_PAYS_OFF_ and when not, then of course it doesn't. And this does not have anythiing to do with its price, only with the requirements that you may or may not have at any given time...