These Stamps Are Forever, but the Savings Are Not

The current pricing structure relies primarily on a weight-based system, with a two-ounce letter, a two-ounce flat envelope and a two-ounce parcel all costing 63 cents to mail. The new shape-based system, which also goes into effect May 14, combines weight with shape to allow pricing to be aligned with processing costs, said Postal Service spokesman Dave Partenheimer.

So, for example, if the contents of a first-class large envelope are folded and placed in a regular letter-sized envelope, it will cost 58 cents to mail instead of the new pricing of 97 cents. The cost for many wedding invitations, which typically weigh two ounces, will drop to 58 cents from 63 cents under the shape-based system.

I like this new approach. The Postal Service should be applauded for creating a pricing structure that will reduce the amount you'll spend to mail some items. And notice I didn't use the word "save."

· On the air: Michelle Singletary discusses personal finance Tuesdays on NPR's "Day to Day" program and online athttp://www.npr.org.

· By mail: Readers can write to her at The Washington Post, 1150 15th St. NW, Washington, D.C. 20071.

· By e-mail:singletarym@washpost.com.

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