so basically what happened is that nvidia only had a limited number of GTX4XX cores to go around and gave them to the highest bidder more than likely
Nvidia designs a gpu and a reference board for the GPU
Nvidia allows the partners to make the reference board or their own after testing(not the GPU)
Nvidia makes a contract with TSMC
TSMC makes the GPU's
Nvidia takes orders on the GPU's depending on how many TSMC believes can be made.
Sends them to EVGA/XFX/Whatever(depending on who has more cash when stock is low)
basically the lack of GTX4XX cores available and not being able to make some profit on those cards was the last knife in the back of BFG who were already in trouble financially.
but the major supplier is definitely Nvidia, Nvidia couldn't supply them cores cause they probably knew they weren't going to meet the quota for them after the big boys got their share.
it appears they never sold it, they only listed it on their site
sitting on some BFG Timebomb PSU's, gotta sell em fast before news gets out everywhere