rough shot at valuation

With very limited info available on GXY's profit margin here's my guess on share price:-

Assuming that GXY produces 17000 tons Lithium @ $5500 per ton p/a:-

That's 17000 x $5,500 = $93.5 mil revenue
@ say 50% profit
= $46.75 mil profit divided by 191 mil (no of shares)
= 24.48 cents per share profit
or $2.448 per share @ p/e 10
or $3.67 per share @ p/e 15

Has anyone out there got an alternative estimate/guess?

Cheers
Moorookamick