Purchase your desktop software from TT or a retailer---after you have your license code you can order a CD if you really want one.
DOWNLOAD (This requires a full PC or Mac—-cannot be used on a mobile device)
https://turbotax.intuit.com/personal-taxes/cd-download/
You can also purchase the desktop 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.
TURBOTAX DESKTOP INSTALL CD FOR $10
https://turbotax.intuit.com/lp/ttd/402