Well, just consider this; the cheapest K8 available, the Socket 754 Sempron 2600+ is sold for $27 and considering all the channels it goes through, I'd give it a cost estimate no thicker than $12. Now, considering that an athlon 64 has more cache we could get it to a cost of $16 and this is for ALL the singlecore athlons, so, the higher the frequency they sell it at, the larget the profit. Following this simple but effective logics, you come to the conclusion that even a 6000+ has a cost of $32; of course, the binning here takes some extra money, but certainly they get a lot more.