Newegg...I saw them on ebay and alibaba, not sure if they are legit .
like how much? 300 euros ?yup and bigger as well. but they cost a ton
https://www.newegg.com/p/pl?N=100011693 600038497 600284848 601303724 601333076 600545605 601321642 601354671
stick to known brands. lots of junk coming out of china that are either not truly 2 tb or use very old tech and don't work very well.