Jagged Alliance Online will change from a Free-to-Play model to a Buy-to-Play model

Jagged Alliance Online is moving to Steam on September 24th, 2015, and will change from a Free-to-Play model to a Buy-to-Play model! From this moment on, the developer Cliffhanger will take care of the game on their own. You can transfer your game progress after purchasing the game on Steam. Please note that you are only able to transfer the progress made in the game until the launch of the Steam version and that all further progress will be lost. All players purchasing Gold in the gamigo cash shop until Thursday, September 24th can get a free Steam-Key from the gamigo JAO-support. From the JAO-support, you can also receive a manual on how to transfer your account.
For the relocation you should keep your JAO-username and JAO-password ready. Please also note that the cash shop will be closed next Thursday, September 24th.

https://support.gamigo.com/index.php?/english

P.S. I'm not sure how much you have to spend in their store to get steam key