@menuhin
I know how group buy works, and also know that most of GBs offer refund when they do not meet their initial estimated shipping deadline for about two months, though not sure if Kekkon accepts the refund.
There are some people who can wait for the extra two months, while some people can't. It's that simple, and not the problem of understanding how GB works.
I also understand if he doesn't accept my refund request, which will lead me to finding someone else to get the keycaps instead.