Urgh this seems a bit of a terrible money-grab from something that's already pretty ridiculously priced compared.
I mean they've basically just done an 'all in one' pack which they already done, and added a bit more modding support (which most games do free) and a story and then charged full price for it again. Even $20 (with all the expansions) for something which is just a re-pack and modding tools seems a bit excessive.
I hate to say this, but it does really put me off the whole product when they price it so harshly.
There are other ways to test the product, which I will not mention, that's why that 'back-part' of the 'industry' exists, so you can test the product before actually buying it (AND EVEN MORE IF IT'S HIGH PRICE)
I've been following it's own line since the very beginning of the announcement of the game (which was quite a good time ago..) and to be honest after all i've read from the matrixgames forums and the screenshoots / pdf's I can personally say I would love to buy it (but I can't, not for any money issue -which is not a great deal if you're buying a good game- but because my country's exchange policy doesn't allow me to buy foreign currency to make the transaction)
Tl;dr --> If you are not so sure about it, download it via many ways (torrent) and IF YOU LIKE THE GAME, BUY IT AND SUPPORT THE DEVS
Have a great night!