I saw one of those off brands running around in Ocatillo and the throttle stuck wide open on a little girl and almost killed her.
I spent the extra money and went with the Polaris 50 for my 6yo daughter. Very stout and reliable. You don't have to worry about your kids getting hurt due to malfunction.
No FKN way would I buy one of those. Just sell it for alittle loss when your done with it.