I never imported shoes before, but this website may be able to give u an idea of the costs involved. They have a "shoes" category.
https://www.easyship.com/en-my/duties-and-t...ulator/malaysia

it's quite useful to have a sacrificial throwaway email account for these purposes

Do you not have the 4 type of email addresses?

1. Personal
2. Spam/throwaway
3. Security (finance related, typically)
4. Work/professional
No wonder Malaysians end up kena scammed so easily. Putting all eggs into 1 basket.

Another question:
If i buy from Zalora MY, but the goods are shipped from HK, will the goods be subjected to import duties?