Well, $100 (not $150) certainly may seem as a lot of money for a magazine. At least at the first sight when you compare them to Stereophile and the likes which sell for 12$ a year. BUT, when you think what you get for your $100 ... well, it makes things look different. In this case, you do really get what you paid for.
In this case, the ad-driven Stereophile IS really worth 1$ and ad-less HFC IS rally worth 15$.
You will get your $15 back ($100 a year) when you buy (or do not buy) one of the components Martin describes. Imagine how much money (and time) that $100 may actually save you.
Where you can find a detailed WP 8/ Avalon Diamond comparo ? Or ARC Ref 110 / CJ Premier 350 ? Or ARC Ref 3 / CJ Act 2 ? Whery you can read that the Krell 202 preamp failed ? Or ARC Ref 3 fauiled ?
Quite possibly - nowhere.
Big magazines avaid such a direct comparos like plague. Not because they are not able to do that, or 'cos they are not aware that readers expect that, but 'cos that may upset their advertisers.
IMO, HIFI Critic is THE most professional, troughful and insightful magazine that is currently available. And I'm really VERY happy I can buy this kind of advice/expertise for 100$.
As for the ARC - I can only say, that is set a new reference standard for Martin.