It was worth the money. 38

Used with a Macbook Pro 13 "of 2011, especially for development.
It works and is easily configured.
It is small and light (and it's almost annoying).
The feel is not terrible (the keys are a little hard and a little large compared to the MacBook keyboard).
When not in use for a few minutes it will disconnect and so there was a little lag when pressing a button.
Some keys are not like the MacBook keyboard (arrowbase, Dieze ...).
Finally the metal plastic imitation really fake.
I am fairly disappointed but in the end I have the money so I'm not going to complain.