Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: A few marginal things. The cards I mentioned is the Match Attax cards. The cards that represent soccer players. I'm a big fan of this thing and I have a huge collection of it. 

So I got to know a MA card seller through a facebook group. I asked to buy 20 cards from his collection. He told me they would cost me 50$. I agreed with the deal and he asked me to meet him at a location near his house. 

The yesterday evening, I went to the location and met the seller. He gave me the cards and after 3 or 4 times counting. I realised that there were only 19 cards. The seller told me that he would go and get me the last card (with my money) that was missing out and asked me to go to the location again to retrieve the last card later and I agreed. 

But shit happened this morning, when he sent me a text massage:

Seller : "Hey man, can you get the card later?"

Me : "Did anything come up?"

Seller : "Yes, I lost my wallet a little while ago"

Me : "Oh, I'm very sorry, so yes lets meet later"

Seller : "Also can you bring 5$ more, cause I need money to get the card, but now I lost all my money"

Me : "No... My man we totally agreed on the 50$ - 20 cards deal, now you didnt give me enough of them, so I will just meet you and get the last card, no additional cash"

Seller : "But I'm currently dont have any money so I cannot get you the card"

Me : "I gave you time to do it, so stop asking for more"

Seller : "alright so you are just a parsimonious asshole hah?" 

I did not reply to his massage.

AITA? Also I guess I lost the last card :(

refusing to give the seller more money to retrieve my stuff