bought cheeper shirt

I went shopping with my friend.Then,we entered a shop.I choose a T-shirt.For a long time,I very like this kind of type.There is two T-shirts.and they are diffent colour.one is black,the other is red.I tried them on,then I feel the black shit is fit for me.So I asked the boss,"How much is it?"the boss told me.It  cost 14RMB.I'm vry happy,it is so cheap.But I told her,"I will pay 12RMB.do you sell me?"She thought a little time.and agree to sell the T-shit to me.hehe,I'm very happy.