I love that invaluable, which puts a negation before valuable, actually means more valuable. It’s because something has so much value, it’s priceless and impossible to value.
Yeah, @Love_my_doggie, I’ll pick things up in antique and resale shops and say to the clerk, “This is priceless.” Often they’re like, “Then you should buy it.” But I can’t, because there’s no price on it.