Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not worth the money

We purchased this last Christmas (owned for 8 months now). The track connectors broke after assembling only three different configurations. The cars do not travel the full length of several of the recommended track designs and the cars wear out fairly quickly. We can't build all suggested designs due to faulty parts and they are very difficult to assemble for anybody under 6 years of age. We have replaced two cars due to the wind-up no longer functioning and at $10 a piece for car or replacement engine, that's ridiculous. When they work they are fun, but if you can find a cheaper alternative, such as mega blocks or matchbox tracks that work with all cars, go with it. Darda is glossy cool on the surface, but not worth the money at all.