Valuable vs Invaluable: Are They the Same? | Merriam-Webster
www.merriam-webster.com › words-at-play › invaluableInvaluable means “valuable beyond estimation,” making the word a near-synonym of valuable. This is because value as a verb can mean both “to prize or esteem” (“I value our friendship”) and also “to estimate or assign the monetary worth of” (“We value the painting at $1000”). It’s this second use that we find at the root of invaluable, meaning that it’s importance or worth is so great that it is impossible to calculate, close in meaning to priceless.