Looking for someone to help me out for something im interested in buying from China, Korea or Japan and any other countries to be honest.

Hii, i hope this message reaches the right people. I love buying kpop albums, kpop photocards and many other items like monster high and the list goes on. Im also looking for someone to help me out with getting stuff custom made like on aliexspress, that would be helpful too

I've heard of Xianyu, Taobao, Mercari Japan and others. I have had the ability to order from Mercari japan but wondered how much would the same items be in China on xianyu or Taobao and if they are even available. I would appreciate any help. Im originally Turkish but due to my countries custom laws, my friend in the Philippines has offered to receive the package on my behalf. If anyone could help or give advice or guidance on what I can do. I would appreciate it. Also please send proof for me to be able to trust you if you have done this for others.