I have a concern when cancelling my mavic order, I might lose some money on the currency exchange rate fluatuation. In this case, who is going to bear for this loses? FYI, I paid with Paypal in MYR.

You could just file a dispute and then I believe you get your full amount back.

Thanks for the feedback. I had other items that refunded from bangggood that I notice the amount is less in MYR but similar USD amount.