TLG is not shy about repeating City sets. We've gotten over a dozen different police stations and almost as many hospitals. This is the third modern standalone helicopter and one of over a dozen that have appeared in various sets. Apparently the swamp boat and the microlight just were not as popular.
As an add-on this is a nice little set. I mean, who's got $60-$100 to drop on a larger set with all sorts of other enhancements? Just rustle up some pocket change and spend $4 on this little guy and you can piecemeal your police force together.
As with many of the helicopters, these rotors just aren't long enough. Scaled out, they'd need to be at least 12 studs long each. Here, we have 6. But in this case if the rotors were any longer, they'd chop off the tail. So perhaps a slight redesign would help alleviate that issue.
But the rotor engine is nice. It's got some minimal greebling and is more than just a rotor on a stick. I almost feel as if it were modeled after a real life helicopter. Though I have no idea which one as aeromotive vehicles aren't my strong point. I think I've heard the name Sikorsky once.
Right now, Target is so stock full of these that they are falling off the point of purchase displays. At 48 + 4 pieces, this is a nice deal for $3.99. I think that's what I paid. Even at $4.99 it still meets the 10c per part nirvana. There's a bunch of basic pieces and a few highly specialized helicopter pieces. Other than that the landing gear is brick built and there are a couple of blue panels involved. With a little creativity, you could turn 20 of these into a building or something.
If you've got nothing better to do then pick this up and enjoy the 3 minute build. Or head on over to LEGO.com and get something a little beefier: