TIE Profitability

Hi sorry the start of a new tread, I couldn't find a similar subject on this board.
I believe POG will sky rocket this year and leave $2000 levels as support, hence good time to invest in gold miners..
Already own a UK miner and was looking at other opportunities. I see TIE very promising from production growth (leach project) and resource growth (high grade and only 10% of license explored).

I just wonder if anyone can comment on this bit below:
Abujar DFS forecasts gold production averaging ~200,000 ounces per year over the
first six years of production at a weighted average all in site cost (AISC) of ~US$800/oz
=====
Although an AISC at $800/oz is very low (indeed possibly the lowest out there among gold miners)
I just wonder if the terminology "average all in site cost" is not a trick to confuse the reader with "all in sustainable costs".
Pl don't get me wrong I do think TIE is a very good investment proposition, is just that I am trying to predict what to expect when profitability numbers will come out...