yep, looks good. should be new then, since they were still in packaging.
You have to decide for yourself if not having to send it back and the reduced price is worth not having a warranty from the manufacturer. does the seller have to provide warranty anyway in your country? I think this would be the case in my country, if the seller is a business, irrelevant what warranty seagate gives you
Some anecdotal evidence, take it or leave it :-) I have a 12x 4 year old Exos 7E8 (the previous generation) and I’ve not had any failure yet since I bought em. In the past, I had many (many many…) failed seagate drives but never within the warranty span