Somehow the link was wrong (or changed) in my original opening post. Correct link is here, below!
Finally the Post Office came out with the new NOTICE 123 PRICE LIST, something we all should bookmark. It gives all the domestic and international prices and services -- both "Retail" ((1) what you pay the clerk at the post office, and (2) what you pay in stamps applied to the mailpiece); and "Commercial" (what you pay when you print your own postage labels via your computer). (The new postage rates begin today, January 21.)
Link to Notice 123 price list: