The 500 Trolley Stopper kit is large enough for a medium suburban shopping centre. In the competitive environment of retail, shopping centres need to do as much as they can to get an edge on competitors and ensure the customer has a great end to end experience from parking to loading their goods at the end of the visit. Customers love that Trolley Stopper helps them load their shopping goods and children into a car without the annoyance of a trolley that is trying to run away from them. Need installation as well? We can offer installation at select locations in Australia. Please contact us and tell us more about your shopping centre. We will be happy to help get Trolley Stopper installed in your centre.