If you are trying to buy something online, try to search the site name inside Retailmenot, they may have discount coupons available for that site, and apply that discount coupon and save atleast some money ;)
http://www.retailmenot.com
RetailMeNot.com is an easy way to find online coupon codes. Enter these codes at the checkout page of participating merchants for instant discounts.
How to use : http://www.retailmenot.com/tutorial.php