non-resident rates are as follows
1 day- $12.49
3 days- $27.52
7 days- $42.31
year- $63.21
And this, taken from the 2011 regulations.
If I am 18 or over, who can fish under my licence?
your spouse;
your children (as well as those of your spouse) who are under 18;
your children (as well as those of your spouse) who are between 18 and 24 and who have a valid student's card in their possession.
These persons, except for your children (or those of your spouse) under 18, must have your licence on hand if you are not accompanying them. Different conditions can apply in the case of an Atlantic salmon sportfishing licence (see publication Salmon sportfishing in Québec).
Can other persons fish under my licence?
any person under 18;
any student from 18 to 24 who has his valid student's card.
However, these persons must fish under your supervision or that of your spouse.
edited to add: Yes you can also purchase your license from S.A.I.L. but there are only 3 stores and all are in the Montreal region. Find a tackle/bait shop along the way, plenty of CTC's as well.