First I want to say that I am not a seller or know any sellers of these bikes.  We bought a Meerkat 50 for our son, not off Ebay, but off of another website.  I have been reading these guides lately and feel that they are very unfair to these ATVs.  My son is only 3 years old and he has a ball on his four wheeler.  We have not had many problems with the bike, the ones we have had are very minor, and we are very satisfied with the bike.  We have friends who have paid much more for the name brand ATVs and they have some of the same problems with stiff suspension and stability.  Our son has rolled his once by turning too quickly, but he always wears his helmet and pads and the bike is small enough that he could just kick it off of himself.  A friend of ours has a name brand for their little boy and are unsure of letting him drive it himself due to it being much bigger. 

In short, I believe these are pretty nice little bikes for the price and if you are at all the least bit mechanically inclined, I wouldn't hesitate at all to buy one of these.  We figured our son would outgrow it in just a few years, so why spend so much money on a name brand when he has just as much fun on the Kazuma brand.  We are probably going to purchase the wheel spacers we found on Ebay to take care of the stability problem because the only problem there is that the wheel base is a little to narrow.

I hope this helps someone who is thinking about buying one of these bikes, but has been hesitant after reading many of the guides on Ebay.