[seanofjapan]

This raises a good question about what the informal "statute of limitations" is on claims related to transactions here and perhaps setting out a definite time limit for all transactions would be helpful.

4 1/2 years is just way too long. The time frame for claims should reflect a reasonable amount of time that the buyer has to assess an item, balanced against the seller's desire for some finality.

At most this should take months (give a buyer some time to examine it, send it in to a grader and receive their grade if they want, show it to some friends etc, also maybe factoring in a few weeks grace period since not everyone has the time to do that right away), not years.