R/C aircraft can become a very expensive hobby... I bought some LSA plans from an 80 something fellow out of England who imports and sells diesel powered engines for R/C aircraft. Have started on a couple of different experimental aircraft projects, life just interrupted them.
The quadcopter drones in the sub $1K bracket are amazing. From what I've seen they are easier to learn on then the really inexpensive tiny ones.
Yeah my brother got one maybe a little over that and a toddler could maneuver it, it's that simple.