Let's go off the GS estimate adjusted for management...

Let's go off the GS estimate adjusted for management commentary.  Most reliable IMO.
H1 FY19 sales of $125m to $140m
EBITBA of $30m to $35m
PAT of $21m to $25m (before one offs)

If H2 FY19 sales are $170m to $190m
EBITDA of $38m to $47m
PAT of $27m to $33m (before one offs)

FY19 sales are $295m to $330m
EBITDA of $68m to $82m
PAT of $48m to $58m

P/E ratio of 20 for no SAMR and P/E ratio of 30 with SAMR probable.

Valuation should be between $0.96b and $1.74b.
Current valuation is approx $0.82b
Expect an uplift of 20% to 110% depending of FY19 and SAMR outlook. DYOR