What makes something 'priceless'? Take, for example, the Mona Lisa. It was painted on canvas and with very basic oils. It probably cost Leonardo next to nothing to create yet has evolved in perceived value significantly. Anyone wishing they owned it would want to do so because of the kudos and reputation attached to it, not because it comprises anything of value. Something in your world might appear meaningless or insignificant yet holds massive potential in terms of providing you with necessary inspiration. Expect soon, to see how priceless that is.