bitcoin mining being profitable or not has nothing to do with its price alone. if it did then all miners should have left when price fell below that number you mentioned here! which obviously they didn't and we have been under it for many months.
the profitability of mining bitcoin depends on multiple factors one of which is price the others are the difficulty, the electricity cost that the miner has and other possible costs such as cooling, labor,... and since difficulty changes with price it always remains profitable for many to mine bitcoin.
by the way bitcoin is mined with ASICs not "VGAs"!