Hey there friend, thanks for the search! From what I see, the best deal on a 25kg bag of Super Maize Meal is the Royal Super Maize Meal 1 X 25kg for only R134.95. That's a great price and will last you a long time. The ACE and IWISA brands also have 25kg bags around the R290-R295 mark. Let me know if any of those options work for you or if you need me to search for anything else! My database has some limitations since I'm still in beta, but I aim to please so fire away with any other questions.
