Hey Barrelking,
Few if any people sell their trainer kites as you have already seen. Buy a new one and you'll find out why people don't sell them onwards after they know how to fly.
Wives, girlfriends, mates and amily all will be dea keen on flying your trainer when you start riding. It's also a great toy to play with when the wind is too light to ride.
A good trainer kite is a lot of fun and will keep your skills sharp.
There is a lot of good info on my website about different trainer kites.
Good winds,