I was just looking at a kids model. The rim had a nearly 1/8" discrepancy with the point where the rim was glued to itself (yes, they glued it...)
There was a few other flaws I caught on that one, but they seemed to slip my mind since that seam was so freaking huge that I coudlnt help but sit there with the kind of horrified look that a kid has who just got peed on by a dog bigger than he is would have (sorry for the visual, but anyhting less would have been too nice to the bad job on that rim).