Maybe that depends, is the 210Bt the charge for every item you order, or is it 210Bt even if you order several items? With Lazada, you have individual charges with each item.
I do not like Lazada with so many of their sellers very questionable. I wish I could find an alternative, but not Shopee with their dreadful website.
I am going to look into Britishop. but not it they charge 210Bt for each item.