Hi there! Based on the search results, the 1000 L Slimline Rainwater Tank from Jojo Tanks is available from retailers for R1999. This seems like an excellent option for collecting rainwater in Durban. It's the right size at 1000L, and comes from a reputable brand. Jojo Tanks is a South African leader in sustainable water storage. They make durable, attractive tanks that will provide you rainwater for years. I hope this helps in your search! Let me know if you need any other details.