I have it for about 2 years. The ball is not for much. After 2 summers with moderate volley on the beach and off the beach, it has filled with cracks and now it's falling apart.
If you want it for decoration, take it, otherwise choose something else.

Mini ball. I don't know where it can be useful other than being collectible and spending the rest of your life talking to it.
Construction quality is okay, mediocre, 10 euros only, it's fine, especially for kids, it's not heavy. It's worth it