eBay seller question

[Baseball Fan]

Hey everybody.

I recently sold an autographed baseball insert card on eBay. It arrived at the buyer's house on Feb. 5 and positive feedback was left a short time later. Almost three weeks later, 17 days to be exact, he requested a refund because he said he noticed surface scratches while he was preparing to send it in for grading.

I'm fairly new to selling things on eBay, but from what I can gather, there is no protection for me, correct? If it's within 30 days, I have to refund the money?

My question is, how are you ever comfortable after making a sale that they aren't going to come back at you? I figured a positive feedback and 17 days would be a great indication that there was no issues.

Can somebody come back three years later and ask for a refund, or is there a time limitation?

Thanks for any possible insight/help.