Bestbuy and other "marketplaces" allow their web sites to be used by third parties who give them a cut of the proceeds. And they don't always check that the vendor is reliable or honest. This can happen on any marketplace platform that allows third party vendors. You have to be very careful when it does not say "Sold by Bestbuy" or "sold by Target" or "Sold by Walmart" but is sold by someone else.
And yes, this is not an authorized reseller. They might just steal your money, or they might give you a copy with an invalid license or a partially used license that you can't fully use. And if it doesn't work as expected, Turbotax corporate won't fix it for you.
