After you file

I doubt that it is an authorized re-seller.  TurboTax distributes to dealers like Costco, Sam's, Walmart, Best Buy, Staples, Amazon (but not all Amazon dealers), etc.  They do not distribute to fly-by-night websites.  Beware of malware when not buying form a known re-seller.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**