TruFlight 2 is a term that can refer to various products or services, so the cost will depend on what you are specifically referring to.
If you are referring to the TruFlight 2 golf ball produced by Bridgestone, the cost can vary depending on the specific model and where you purchase it from. As of my knowledge cutoff date of September 2021, the retail price for a dozen Bridgestone TruFlight 2 golf balls ranged from around $20 to $30 USD, but prices may have changed since then.
If you are referring to a different product or service called TruFlight 2, please provide more details so I can better assist you.