Love IGR, but don't get fixated by the POG vs 550 costs. Even the announcement hedged its bets: "margin of +$1,200 per ounce for gold sold at current gold prices".
They are NOT selling all their gold at current gold prices. They are hedged in for (~70%??) of production for the next year or two at a margin much closer to $800.
Still a great margin, but don't multiply 100k ounces by 1,200. Not this year or next.
DYOR