I read that the Construct 2 Free Edition can't be used for commercial purposes. It mean that i can't sell my games in, for example, MarketJS?
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You are not allowed to earn any money from the games/apps created with the free edition of Construct 2. Also means, no In-Game Ads.
This also includes selling a game on any platform (but you can give it away for free).
And how much cost a license for sell all game that we want? And what is the name of the license?
You can see the differences here: Scirra Shop
Up to a total revenue of $5000, you can go with the Personal Edition, after that you need the Business Licence