Posted By:
JK
1. Inform the seller of the problem and that he understands that the seller was informed in advance of the problem with the two cards that are not authentic.
2. Offer to purchase the authentic cards at some agreed upon price or all of the cards at the sale price if the questionable cards are submitted and graded by psa/sgc.
3. If the seller doesnt agree, dont go through with the purchase, report him to ebay and be prepared for a negative.
Though frankly, I doubt ebay will do anything.