Thanks to: Samantha

A famous art collector is walking through the city when he notices a mangy cat lapping milk from a saucer in the doorway of a store and he does a double take. He recognizes that the saucer is extremely old and very valuable, so he walks casually into the store and offers to buy the cat for two dollars. 
The storeowner replies "I'm sorry, but the cat isn't for sale. 
The collector says, "Please, I need a hungry cat around the house to catch mice. I'll pay you twenty dollars for that cat." 
And the owner says "Sold," and hands over the cat. 
The collector continues, "Hey, for the twenty bucks I wonder if you could throw in that old saucer. The cat's used to it and it'll save me from having to get a dish." 
And the owner says, "Sorry buddy, but that's my lucky saucer. So far this week I've sold sixty-eight cats."

一个著名的艺术品收藏家正走在城市的街头,他看到在一家商店的门口,有一只生着疥癣的猫正在舔着碟子里的牛奶.突然,他看出这个碟子很古老也很有收藏价值,于是他拐进了店里,提出出二个美元要买这个猫.

店主回答:"对不起,这猫不卖."

收藏家说,"买给我吧,我要一只饿猫去我家抓老鼠. 我付给你20美元来买这只猫吧."

于是店主说,"成交." 把猫递了过来.

收藏家继续说,"嗨,二十美元就搭上那只旧碟子吧, 猫已经习惯了那只碟子了,而我也省得再去买新碟."

然后听到店主说:"对不起,伙计,这是我的幸运碟,有这只碟我这个星期已经卖了68只猫了."