Well first of all it is against the rules to trade for Korean Pokemon on 4th generation. Since they aren't compatible with other 4th generation games, just other Korean 4th generation games. Also most of the Korean ones on 4th generation are hacked or put on 4th generation though some other hacking way. Well I do know though that there is plenty of other Spain events out there, but most are from 4th generation events. Which would make them less valuable then generation 3 events. However there is 10th Anniversary Pokemon which were distributed in Spain, but I don't now of any other GBA event in Spain. If you try and get all of the events out there, I would recommend getting a few more games (like me with 3 games). My HeartGold is filled almost to the max and the same applies for my Diamond. My Pearl is not there yet, but I would say it is about 1/4 to that point though.
Also could you do me a favor. Could you check out my shop and let me now what you think of the events section? Since I am trying to add more information about the Pokemon on my shop, that way I will have less questions asked.
I also have a different 10th Anniversary Umbreon instead of the one from Lavi. I have found someone on a different forum with a legit male Pikachu, but I will have to trade for one of your 10th Anniversary Pokemon though since it will be qualified as NFT (only trade for same Pokemon).
EDIT: I also forgot to mention I have about 7 or 8 new GCEA Pokemon. All of their information is listed on my shop. Also if you think I should change anything or add anything else (effects or information) let me now. Since I am trying to figure what people like better than others. I am only asking people I trade with the most, since I fell they would be more honest than people I don't trade with often.