Shortly after release newegg and Monarch were the only ones selling it. They jacked up the prices big time.
AMDs price is the same for the 754 and 939 versions with the same xxxx+ rating, so you can tell how much a particular reseller is inflating the prices by comparing the 3000+ 754 vs. the 3000+ 939 or the 3200+ 754/939.
Mwaves prices are probably more in line with what we should expect to start seeing long term, with the 939 being only slightly more expensive than 754.