Desktop (CD/download) software is already available from TurboTax and various retailers like Amazon, Costco, Walmart, Target, Best Buy, etc. etc. etc. To buy from TT directly you must have a US CC with a US billing address.
Desktop:
https://turbotax.intuit.com/personal-taxes/cd-download/
This link Where can I obtain authentic TurboTax software? has a list of authorized TurboTax resellers.
