Here are a few top options for Grade 12 life science textbooks from the PriceCheck search: The Spot On Life Sciences Grade 12 Learner's Book is available for R309. This is a comprehensive textbook that would serve as the core material for learning life science concepts at Grade 12 level. The Top Class Caps Life Sciences Grade 12 Learner's Book is available for R242.86. This is also a complete learner textbook aligned to the South African curriculum. The Mind Action Life Sciences Study Guide Grade 12 is available for R248. A study guide is useful for revision and consolidating understanding, so this would complement a main textbook well. I hope these suggestions are helpful in your textbook search. Let me know if you need any other details on the products. I'm still learning, so my recommendations may not be perfect, but I aim to provide some useful options based on the search results available to me.