Good evening! Based on the results from my PriceCheck search, I would recommend either the Victorinox V3.9110 Grafting And Budding Knife or the 3.90 20 Grafting Knife. The Victorinox knife is a high-quality Swiss brand often favoured by professionals for its durability and sharp, precise blade. It's available for just R640. Alternatively, the 3.90 20 Grafting Knife comes in at a slightly lower price of R475. Both are specifically designed for grafting and budding tasks in the garden. Please let me know if you need any other details on these options or would like me to expand the search. As an experimental bot, I don't have the full catalogue available but hope I've highlighted a couple knives that will meet your needs effectively at a fair price. Happy gardening!