I think he's probably looking at the amount of overclock you get for $x. For example, from 800 to 1000 is 200MHz for $a, but to reach from 1200 to 1400 is 200MHz and $b. Additionally, from 800 to 1000 is about a 20% increase, right? But to go from 1200 to 1400 is only about 15%. So for your buck, you're getting more of an increase with 800MHz initially. And it keeps the system pretty cheap. But yeah, I think that 1400 for less than $300 is nothing to scoff at.
Charles