What precautions should I take to ensure a safe and successful comic book purchase on eBay?

Prioritize sellers with a high positive feedback score (ideally 98% or higher) and a substantial number of reviews. Carefully scrutinize all provided images for the comic, looking for any damage not mentioned. Read the item description thoroughly for details on condition, grading, and return policies. If anything is unclear, always contact the seller for clarification before bidding or buying. Ensure the shipping method includes tracking and proper protective packaging.