FC1 and FC2 are certainly worth the $3 bucks each.
Yes... they can be a bit repetitive and might upset those comparing them with newer free-roaming FPS games.
The only real beef I had with FC2 is it being based in rather dull terrain.
FC1 in its release day was considered a cutting edge title. By todays games, no. But its a pretty fun romp especially considering it was released coming up on 9 years ago and still fairs well and is fun to play.