I would agree with the individual who posted the image showing the offer within TurboTax 2020's software, offering Quicken 2021 within the TT software as part of purchase. Not an Amazon deal...it is a Intuit deal. The same link worked in last year's software as they had they offer for at least the last couple of years.
Yes, Intuit sold Quicken years ago and it is now overpriced yearly subscription crap, but that doesn't mean that they can't have this deal offered in TT. It appears that Intuit either forgot to remove the deal as they no longer have the permission for the offer or forgot to update the link to get the deal. With Intuit getting sloppy with its lacked of a detailed update history log..neither is a surprise. Personally, I say stick with an old version of Quicken, the new version is the same with the exception of charging you yearly now instead of having to renew every 3 years.
