I bought the original cover (brown) from digitec 4 years ago.
It weighs 173g and when you really look at the product, it looks like leather. The quality is top.
2 months ago, I bought a white case on Ebay. 6.90 euros (yes...), very similar. I can't tell if it's a real Samsung one or an imitation. But this one weighs 161 g. Although it is very well made, I doubt that it is made of leather:
https://www.ebay.de/itm/ORIGINAL-Samsung-Galaxy-Tab-S-8-4-SM-T705-Book-Flip-Case-Cover-Hulle-Tasche-Etui/184077062876?epid=2255426890&hash=item2adbd912dc:g:ELAAAOSw~ddfbIbF
1 month ago, I see this Red case at Digitec. "Cool, I think"...and buy it....
I doubt that this case, although very very similar to the first one is made of leather. the weight is also 161 g.
Question for Digitec:
Why is there not the weight in the packaging in your specifications?
I will be very happy to bring you these 3 cases for an account and for your explanation(s).
Kind regards