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9. Stock Options: Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions (Tables)
12 Months Ended
Sep. 30, 2017
Tables/Schedules  
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions

 

For employees

September 30, 2017

 

September 30, 2016

 

Risk-free interest rate

 

 

1.64% - 1.75

%

 

 

1.11% - 1.43

%

Expected option life

5.5 - 6.5 years

 

4.5 years

 

Expected volatility

 

 

97.6% - 99.1

%

 

 

80.2% - 83.6

%%

Expected dividend yield

 

 

0.00

%

 

 

0.00

%

Exercise price

 

$

0.40 - $0.56

 

 

$

0.30 - $0.88

 

 

 

 

 

 

 

 

 

 

For non-employees

September 30, 2017

 

September 30, 2016

 

Risk-free interest rate

 

 

2.27

%

 

 

1.74

%

Expected option life

10 years

 

10 years

 

Expected volatility

 

 

115.70

%

 

 

104.70

%

Expected dividend yield

 

 

0.00

%

 

 

0.00

%

Exercise price

 

$

0.51 - $0.56

 

 

$

0.30 - $0.60