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9. Stock Options: Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions (Tables) | 12 Months Ended
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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 |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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