The phrase "invaluable resource" means something that is extremely valuable and useful, to the point where you cannot put a price or measure its worth. Full definition
As a parent who understands the struggle of a loved one's addiction, you are a most invaluable resource in supporting families who need help. (drugfree.org)
Advances in technology now provide invaluable resources and tools for educators at all levels. (edweek.org)
Credit cards that earn rewards for travel expenses such as flights or hotels can be invaluable resources when it comes to making dream trips happen. (travelandleisure.com)