Whole supply of those premium devices have been sold on day 1. We do not know how many Galaxy Fold units were delivered there; the number may be anything between 500 and 2000. This is not the first time something like that happened, too. 1000 units of the first batch sent to South Korea have been sold out in 30 minutes.
Date of arrival of the next batch of Malaysian Galaxy Folds is unknown, but do not worry, it is sure to take place soon.