Beware that that the concept of prime is not necessarily consistent across all banking institutions. Many banks modify their prime rate to adjust their lending strategies, however most out there right now are 2.25%.
Take for instance, the verbiage on the link you provided from investor's group:
"* The Annual Percentage Rate (APR) for each term listed above (with a reduced rate for an introductory period, where applicable) is based on a mortgage of $100,000, with monthly payments and a 25 year amortization. The APR was calculated using Our Mortgage Prime Rate of 2.500% set on March 24, 2009, which is subject to change"
2.5% is actually higher than the prime rate for most banks right now.
While HSBC prime rate is now 2.25%.
http://www.hsbc.ca/1/2/en/personal/todays-rates/personal-mortgage-and-credit-rates
RBC is 2.25%
http://www.rbcroyalbank.com/products/mortgages/view_rates.html
Bottom line, compare the rate, not prime minus X.
Cheers
