Thank you for contacting iHerb.
We apologize for any inconvenience this has caused.
Upon checking, we can confirm that we still have free shipping for orders over HK$315.79($40) using SF Express. However, exceptions apply. Please note that this is a shipping surcharge. The charge should not be on most orders but will hit a subset of orders that are for heavier products and do not include products that are shipping saver. Adding shipping saver items will in most cases remove the charge. Here is the link: https://www.iherb.com/c/Brands-A-Z?sss=true
There is no specific weight associated with the free shipping however due to surcharge on heavy items that is why you are charging a shipping cost. We would suggest you to add few items with the shipping saver tag to lower or eliminate the shipping cost.
If you have any other questions, feel free to contact us again via live chat or e-mail. We'll be glad to assist you.
Have a healthy day!
Ma. Isabel Casiano
iHerb Customer Service
22780 Harley Knox Blvd, Perris, CA 92570 USA
http://www.iherb.com/