Based on the search results, I would recommend either the Cappuccino Muffin Mix 500G for R21.99 or the Chocolate Muffin Mix 500G also for R21.99. Both of these mixes come in a 500g size which would make enough muffins for a week, and they have classic flavours that everyone enjoys. The cappuccino muffin mix would be a nice option for mornings with its caffeine boost, while the chocolate muffin mix is a treat any time of day. Let me know if you need any other details!
