This post will examine various credit card offers and their interest rates.
Shoppers Optimum Mastercard:
For the first 6 months, Shoppers Drugmart offers a 1.99% interest rate, with a 21 day grace period. However after these 6 months, the rate jumps to 19.99%! Thats TEN TIMES the original rate! That means that if you have a $100.00 payment unpaid after the 6 month grace period, you will be required to pay approximately $20.00, just in interest charges!

HBC & Capital One Mastercard:
Right off the bat, the Hudson's Bay Company charges you a 29.9% interest rate, with a 21 day grace period. That means that if you have a $100.00 payment unpaid, you will have to pay approximately $30.00 in interest fees! Thats almost 1/3 of your total purchase!
PC Mastercard:

Although each card has its own individual benefits, and unfortunately their own downfalls- each card can offer extreme savings if you are responsible and make your payments on time.