I received a $40 reward card on black Friday after I spent more than $150. A cashier charged me PST & GST including the $40 card. I was wondering why the store charged me tax for the card now? what if I don't use the card? Why I have to pay tax for it before I use it? But there were many customers waiting in front of cashiers, I just let it go. Several weeks later, when I bought a pair of shoes using the card, a cashier charged me PST & GST including $40 card again. I told him I've been charged tax when I got the card. The cashier said the stores do not charge tax when they hand out cards. I didn't have the receipt with me, so I paid tax including the $40 card again. Is it right for a big brand store doing things like this?