Hello,
I am a sales associate in Ontario and would like to clarify how the payment plans work. As well, The Source is not the company providing the financing, but rather a division of TD Bank.
First of all, the idea is that you put your laptop purchase on the card and don't charge anything else to it until that balance is paid off. Any other charges won't be subject to that one year payment plan, and of course thats where things get tricky, and that is why I always advise to only use it for large purchases or for smaller purchases if the payment plan has been paid off.
Sadly, this isn't always made clear by the sales associate when you apply for the card, but I always clearly explain how the payment plans work before I run the application. Of course, it is up to you after this point to keep it current.
I hope this helps you understand how the payment plans work