invaluable Synonyms

priceless of immeasurable worth vital valued valuable useful unreasonable treasured serviceable rich rare profitable worthwhile worthy of immeasurable value of incalculable value of incalculable worth worth a king's ransom unaffordable superexpensive overpriced of value irreplaceable pricey high-priced prized indispensable premium essential dear crucial critical costly constructive collectible cherished beneficial advantageous exorbitant expensive extravagant precious necessary instrumental inestimable incalculable important immeasurable high helpful