PDF to Markdown - For Use in Obsidian

I need to set up an Obsidian vault to capture content for a series of TTRPG campaigns. Obsidian uses markdown (.md) files. With content highly cross-linked. The source content is in a series of PDFs.... (Budget: $250 - $750 USD, Jobs: Content Strategy, Content Writing, Data Extraction, Proofreading, Technical Writing)