I managed to buy the case for 20 euros. It is incredibly high quality, fits perfectly, and provides extra protection for the corners of the phone as it is hard in those areas unlike other silicone cases. Quite durable, I bought the same one again after a year because the lining on the corners had worn off from falls.

After about 3 months of daily use, it started peeling at the corners.. However, the feeling of it is very good!

UPDATE 16/4/2020
It's completely broken, it's for throwing away.. everything on it has peeled off! Unfortunately, even if someone takes care of it, it will gradually break again..

Die Hülle ist überhaupt nicht gut, ich habe sie gekauft, weil ich dachte, sie wäre gut und langlebig, aber es ist genau das Gegenteil. Sie ist an den Kanten eingerissen und verkratzt das Telefon. Ich entferne sie, sie ist ihr Geld nicht wert.

Very good application. Suede texture inside and out.
I don't know how easy it will be to clean, but it's okay. It's stable in the hand, it doesn't slip. For 18 euros, it's worth it, genuine Alcantara. Full yes to buying it for anyone who wants it.
Negatives: The bottom side is open, it doesn't cover the phone (be careful with the charger for possible scratches next to the port). The buttons require a slightly higher pressure.

It may not provide the same level of protection as other bulky cases, but the feeling it gives, the minimal thickness it adds, and its beauty make it worth every euro compared to other plastic silicone cases, etc. Finally, the phone looks beautiful with this case!

We are talking about a high-quality case! It easily goes in and out without adding bulk to the phone, which is essential for this size! It is expensive, but as soon as you hold it in your hand, the feeling of luxury it gives you compensates for it!

A major advantage is genuine Alcantara for those who know. From there on, black has a very good grip compared to other colors, it gets dirty more difficult to clean though (and without leaving marks / something that is a bit difficult with other colors) while finally it sits perfectly on the phone with only one ink spot like apple cases, it is open at the bottom (but it fully covers all its corners).
Is it worth its money? We said genuine Alcantara by Italy.