The Airhog AeroAce electric R/C is about 30 dollars, flies very slowly, and
very well.
Being slow, it is easy for kids to learn to fly. Unfortunately, it doesn't
like much wind.
It can be flown very easily in a gymnasium, though.

There are sites on the Internet with modifications and so forth. It's become
its own sub-genre in the R/C world.


Tim Ward