Wooow, calm down...
You are in essence excited about your own funeral. The good free apps are now going to cost from the same devs. I've donated to them, by my own free will.
Well well, stop all the "repent, repent, for the end is at hand" stuff. Come on, its all gonna be ok. Before commenting on said above, I don't just want to mock you or anything, I'm a little concerned myself. But don't worry, Apple does have a couple of things to think about before making such business ideas.
First, Apple isn't that big of a fool. They know this is the "download all you can 'til your broadband speeds exceeds-generation", so whatever they are having put up on iTunes as paid content, isn't going to be too expensive for its value (good apps will cost more, no sh*t). I mean, Apple must have noticed that pricing your iPod apps (read; games) too high is only going to lead to more seedings at torrent sites (search at any for highest amount of leechers/seeders torrent, most probable something like "All iPod games blabla"). So whatever they're going to charge, it can't be too expensive or the "free route" will become too easy to take for the customers/consumers ("hare's path" or "hazenpad" as we call it in Dutch

).
About the cost of the SDK itself; I think it'll be certificate based, and one time of pay per year only. Charges per app will vary from 0.99 cents up to 3/4.99 is my guess but free apps will be there too. Some developers who have some spare time on their hands won't charge anything, maybe donation wise gather money for the license, or just post some extra banners on their sites and blogs

. But more popular ones, maybe TomTom, Nuvi or any other GPS wise application will probably charge some money, but be honest, I'd be more than glad to pay up to quite a lot of $$/ to see some Navigation software on the iPhone (I know there isn't a GPS chip in the iPhone, but if Apple just upgrades the bluetooth chip software wise (which, I think, isn't that hard) an external GPS receiver could be connected).
So, yes if fear for having to make some extra cost besides my contract at my provider, but the idea of having well integrated, good looking (OSX smoothness <3


) apps, with greater capabilities, thats (nearly

) priceless.