I'd consider paying $150 for the basic rulebooks, if they would promise in return that every official rules supplement, including every module that contains new monsters/spells/items, will be published on the internet for free.

But paying $150 for just the first instalment of what we all know is going to be an endless drip-feed of ever-more-broken kitchen-sink rules? The word of mouth is going to have to be pretty damn' good to sell me on that value proposition.