the problem was that 780G boards were build with 4 phase power (can do a max of 90watt cpu), or sometimes even 3 phase (65watt cpu max)... gigabyte is one of the FEW who built a 5 phase board that could handle the 125... but wouldn't OC... OC boards typically have 6 to 8 power phases...
Selling off 939 parts actually is very good right now... 939 x2 3800+ processors are going for 90$ a piece on ebay... while AM2 variant goes for 30$.
There are a lot of people trying to fix an old machine without upgrading the ram, mobo, and PSU, so they are willing to pay extra.
I gotta say that 210$ for such a combo is a great deal... i keep on telling people not to buy phenoms.. but that is because 200$ for a phenom BY ITSELF when you can buy a Q6600 or an E8400 for the same price, or an X2 5000 BE / X2 6400 for much less...
But at 210$ for the whole package it actually provides better bang/buck. I would have bought it too, if I actually had a use for a quad core.