You are obviously new so I will give you a little advice, the extension you have chosen is crap at best and I would recommend you keeping away from it since except for England and Germany the vast majority of European extensions never took off and simply sit around gathering dust. Com is obviously the top choice though if you are not simply going to choose locally. Keep away from .eu, it will only cause you a loss of money, stick to .uk & .de in the Eurozone as they are amongst the most respected extensions in the world
Figure out what en-en actually means, does it has some way to be monetized, that means is there a product or service that can easily be attached to it?
Instead of searching Google keyword using the broad criteria set it to "exact" and it will give you a far better window into what is valuable. (For example, en en only has 1,300 searches, a far less impressive number)
Without knowing why you got it or what it could be used for I am going to have to say that you should probably go for a grace delete
-$10
We have all been new at it at one point, and most of us have chosen the occasional bad domain and some of us still continue to this to this day however we soon grow out of it for the most part, if I were you I would go get a list of dropping domains from the Godaddy closeouts and identify those that might be of value without buying them. I did this every night for a month and out of 5000 domains I might end up with 1 or 2 that had potential, it really hones your eye
Don't get discouraged
