I loved the Kidz kargo and nothing fell off mine, its one of the older models I purchased it from E bay for about £40 and have just sold it again for £12. We loved it took it everywhere even to europe, there is a warning on the back to say ` tighten nuts and bolts regularly`. Our older one loves to walk but even after half an hour out walking he wants to have a rest so it was great to pop him in the front. The shopping bag underneath was also very good if if a little weak. We piled coats and shopping on ours and along with our 3 year old and 15 month old it stood up to the test.
I believe that the sellers who write ok but only used a couple of times must only take their Children to and from the car or very local shops.
Would definatly reccommend