You can purchase it from this site or try a number of other retailers like Amazon, Costco, Walmart, Target, etc.
https://turbotax.intuit.com/personal-taxes/past-years-products/
You can also purchase the CD/download from various retailers such as Costco, Amazon, Walmart, Best Buy, Staples, Sam’s Club, etc. etc. etc.
This link Where can I obtain authentic TurboTax software? has a list of authorized TurboTax resellers.
