Although not a beginner I have just aquired a Sea Nymph from e-bay with all the radio and running gear factory installed.
It is still in the original box with unapplied stickers and a "new" 7.2v 1400mAh battery (will be replaced with something a bit newer) !
Not bad for the princely sum of £21 !
It will get its first taste of water on Sunday, I can not find much about it on the interweb and wondered if anyone else has or had one of these.