Try
Speedy Glass
14-500 Eagleson Road, Kanata, ON K2M 1H4
(613) 599-8711
or
Speedy Glass
1166 Heron Road, Ottawa, ON K1V 6B2
(613) 523-7692
and compare yourself.
Apple Auto Glass (check your Yellow Page to get their phone number) is another choice.
All of them are way better than Centenial price-wise.
BTW, If you can take the window off yourself, you will save big chunk of money.
Let me know if it will help.