Expensive part without added value

Since I have the Helix Cat Day, with whom I am very happy, had to be also a matching envelope.
Unfortunately, I have no alternative shell found.
The original is simply too expensive for that price in the delivered quality.
It is made of plastic poorly finished with me fray the edges of. It is very susceptible to dirt and the tab can thus not up.
For this price I would not buy again and would not recommend.
But since I also use my Tab outside needed a protection.
For the shell is suitable but not more. From me there for any purchase recommendation.
Let's see how long the envelope keeps hopefully there until then alternative cases.