Unfortunately, I bought it for 15 euros because I couldn't find it anywhere with a slim input and I was in a hurry. But the price is not the problem, the problem is that I got an electric shock when I touched the UK input while the European input was plugged in. It is generally dangerous.

It looks fake... but so far it hasn't caused me any problems...(Daily use often - occasional international trips)

The product is definitely quite dangerous. Useful but requires tremendous caution as other ports that have electrical power may be exposed (depends on the socket, for example in a power strip or in a T). I got shocked normally. Luckily, I was wearing plastic shoes.
It is very very cheap and does the job but it requires attention. Especially when there are small children, not even as a joke.

Honest product for its cost. The major downside is that it needs to be able to fit European sockets because it is particularly thin and delicate. If you can't find a socket that fits, tough luck. Otherwise, its use is very easy and I haven't encountered any other issues. It also comes with a case that is convenient for transportation.

Personally, I bought it for the European plug socket and I have to say that it is a complete disappointment. The European plug, when you open it, does not lock, making it very difficult to plug it in. On the contrary, the other two (American and British) have a button to lock them.