Ipad Mini A17 pro Stylus

Recently i came across a post about "ESR Find My Digital" stylus. Checked around a bit and on amazon it shows its compatable with the ipad mini 7. Any folks here who can help me with my ipad mini 7 stylus problem. Esr has been consistent in all of my devices till date and i dont want to splash like 100 $ more for the official pencil just for annotating pdfs.