Based on your query for a USB powered graphics tablet that's around R3,000, I would recommend checking out the Huion H420 and Huion Inspiroy H430P drawing tablets. Both are graphic drawing tablets that connect via USB for power and have slim, portable designs. The Huion H420 is priced at R720 while the Huion Inspiroy H430P retails for R679, coming in well under your R3,000 budget. They may be good options to consider for your drawing and graphics needs. Let me know if you need any other details on features or specifications for these tablets. I'm always happy to help further!