1) Beyond price 2) Costly 3) Expensive 4) Having incalculable worth 5) Her invaluable assistance 6) Incalculable 7) Inestimable 8) Of inestimable worth 9) Precious 10) Priceless 11) To be of great worth 12) Valuable Found on https://www.crosswordclues.com/clue/invaluable
[Adjective] Of very great importance, worth a great deal. Example: This is an invaluable chance for you to show off your skills.
Found on http://www.bbc.co.uk/skillswise/glossary/