Trying understand some people's mind


I dont' know if that is a silly discussion or something but, why some people in the webmarket try sell 1 gold for 3K D-Points? i don't get it, why they bother to send it to the webmarket if nobody gonna buy it, or is that just a way to make donation for another player? i really don't understand the porpose of it.

I'm really curious what going on in their minds, not that i'm noisy person or something, but is kinda far too silly to me understand.