Forever Stamps are always sold at the same price as a regular First-Class Mail stamp. The Postal Service developed the Forever Stamp for consumers ease of use during price changes. Forever Stamps are available for purchase at post offices nationwide, online at usps.com, and by phone at 1-800-STAMP-24 (1-800-782-6724).
Production Possibility curves. The production possibility curves is a hypothetical representation of the amount of two different goods that can be obtained by shifting resources from the production of one, to the production of the other. The curve is used to describe a societys choice between two different goods. Figure 1, shows the two goods as consumption and investment.
Points inside the curve imply that the economy could have more goods if it achieved full employment and productive efficiency. Points lying outside of the production possibilities curve would represent a greater output than the output at any point on the curve. Such points, however, are unatÂ­tainable with the current supplies of resources and technology. Law of Increasing Opportunity Cost