Let me address the issues here
a) we can't just "look at my pms" - if you want us to investigate the issues in a PM you must report them to us.
b) the "other members" you have complained to me about getting involved in this is actually a moderator on this site. I'm sure he will read shortly the PM report you made about him last night. And yes, he does collect NBA cards.
c) if you receive a card, and you are not happy with it, and the seller offers for you to send the card back for a full refund and you refuse, thats the end of it. The seller has completed their obligation to you. The seller has absolutely ZERO requirement to give a partial refund of any kind. Now for you to create a PayPal claim for a partial refund because you didn't like the card, now that's just low. I wouldn't expect that to see that happen again to another member here. Do you buy items from the shop, see that they aren't up to your standard, then proceed to lean over the counter and swipe $20 from the till as a "partial refund" ?? No you wouldn't, you would return the item for a full refund and if they didn't have more of what you wanted, you would go and look elsewhere for that item. Why didn't that happen here ?