[Gondring]

USPS rates have increased slower than inflation over the past 30 years. They would be a bad investment even if liquid and honored.

As some have pointed out, they aren’t even liquid. I tried to cash in some a while ago and they wouldn’t take them.

[muawiyah]

All things considered the "forever stamps" ~ the idea of an old buddy of mine BTW, make as much sense as the ONE PRICE PRIORITY MAIL or EXPRESS MAIL cartons.

They reduce handling costs tremendously, and you no longer have to teach people how to count to use them. That task can be left to the public schools and institutions!

[XRdsRev]

Actually modern US postage rates are a good deal historically speaking.

In 1847 (when the US issued its first postage stamps) it cost 5 cents to mail a 1/2 ounce letter, 300 miles or less (over 300 miles cost 10 cents). Adjusting for inflation, those same letters today would cost $1.14 or $2.28 respectively.

Our postage rates are actually at a minimum, less than half of what Americans paid before the mid-19th century. Early 19th century US Postal rates were even higher.