It's really a good bargain. 真划算啊。
A:Can I help you?
B:Yes,I want to buy a necklace as my wife's birthday gift?
A:How about this one?
B:It looks great.How much is it?
A:5000yuan.Do you have a membership card?
A:Why not apply for one?If you apply for a membership card at 40 yuan per year,you can save at least 2000 yuan.
B:Why do you say so?
A:Because you can get 10% off with a membership card.
B:Do you mean that I can only pay 4500 yuan if I buy this one?
B:It's really a good bargain.I will take this one and apply for a membership card.