This agreement is valid for one year and takes effect immediately after both parties sign and stamp on it and Party a pays bargain money to Party b.

本协议有效期一年，自双方签字盖章并于甲方向乙方支付订金之日起生效。

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That's how value marketing works - the food retailer offers you a lot more food for just a little more money and you say what a bargain and you spend more money than you intended to.

BBC: Six Forum: Health Warning on Big Portions

Many bargain shoppers save tons of money with coupons.

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To help the economy recover, Greenspan made lots of money available at bargain rates, providing powerful incentives for people to load up on debt, much of which was spent on housing because of political pressure from Congress and support from the government-sponsored enterprises Fannie Mae and Freddie Mac.

FORBES: Why The Fed Can't Be Counted On To Save The Economy