The game as it stands is well worth the price. It's not "abandoned," but likely will not be finished anytime this decade. Despite the slow pace of development, you can still have lots of fun with and without mods. You and your friends could easily get 100+ hours out of the vanilla game.

Like others have said, the game is by no means abandoned, but do be aware that the development is excruciatingly slow, no matter the excuses given for the pace. Do not buy it expecting a finished game.