It's not a "drone" with all the sinister connotations. It's a radio-controlled flying toy that you are really after.
The cheapest, best, off-the-shelf one you can buy right now is the DJI series and it's about $1200. And that's more of a mapping and photography tool than a toy.
You can, however, build an RC toy for about the price you mention, and it would be a lot more fun. Forget the camera for now (though you can add a camera later easily enough). Some wood scraps, motors, speed controls, props, battery, radio with receiver, and a HobbyKing KK multirotor controller and you're in business. A tri-copter would be quite fun to build and fly (requires a servo to tilt the one rotor). I think you would get far more long-term fun from a project like that.
http://www.instructables.com/i...
A prebuilt unit that costs $150 will be fun for a day or to for you, and then I suspect it will be crashed and lie broken in a drawer.
People seem to think that RC aircraft are things they can just toss into the air and enjoy for hours. But it will take some serious work and training to learn how to fly them. If you take a bit seriously I guarantee you'll have a lot of fun.
I fly fixed wing and think that's funner than multi-rotor, but to each his own. I do plan to buy a DJI soon, though, although even in Canada the regs for using them in a pseudo-commercial way (say mapping) are murky.