Can you restore the original behaviour, or at least place a warning on this? It's easier to compare two different products by GH/$ than the other way around. For example, one can say Brand A is twice as good as Brand B. With the way it is now, one must make a mental note that 40 is twice as bad as 20, not the other way around. I went to the page, noticed that ASICMiner is way ahead of the competition, and only then noticed something was not right. Luckily, I'm not purchasing hardware right now—but this could snag someone that was.

I think it might be the label, actually. When one sees "Cost Efficiency", one thinks "bigger = more efficient is better". Maybe this can be corrected to "Cost per gigahash".

(Also, it's inconsistent with Power Efficiency. You should probably decide on one way to display the numbers and use it for both. It's confusing otherwise.)