iHerb Delivery Costs from USA to Singapore

Usually, I time my purchase with product discounts and i use Singpost since it's free delivery for orders over S$54.36 which is quite easy to achieve. (see details below)

SingPost — SG$0.00 Free!

Estimated Delivery: April 26, 2016 - May 02, 2016

Flat SG$5.44 - Free for orders over SG$54.36! 
Direct delivery through Singapore Post,
Weight: up to 14 pounds (6350 grams)
Value: up to SG$271.80 OK for P.O. Box
Takes 4-8 business days, with tracking number
Only for consumers, not for re-sellers

DHL — SG$10.87

Estimated Delivery: April 25, 2016 - April 27, 2016

Extra discount for orders over SG$54.36!
Duties and Taxes may be collected at delivery
With tracking, Max 150 lbs (68 kg), No P.O. Box

UPS — SG$13.59

Estimated Delivery: April 25, 2016 - April 29, 2016

Duties and Taxes may be collected at delivery
With tracking, Max 150 lbs (68 kg), No P.O. Box

Customs Information

• If your order value exceeds SGD $400, the entire sum would be subject to Goods and Services Tax (GST).

• Due to the currency exchange rate changing daily, orders with value very close to the tax-free limit may be
  assessed D&T charges, as the currency exchange rate may vary from the order date to the customs clearance date.  

• GST is calculated based on the CIF value of the goods plus all duties payable, and 7% GST gets levied on goods
  imported into Singapore. GST relief is granted on goods (excluding liquor and tobacco products) less than SGD $400.

• Please check with the Singapore Customs www.customs.gov.sg  to see if you can import the items in your order, and
  if any additional licenses or permits are needed.

• Customs may hold orders from Operators/Retailers; if you are an Operator/Retailer, please check with your Customs
  office regarding importing natural products.

• If your package is returned by Customs, due to an incorrect address, or if the whole order is refused; iHerb will refund
  you for the products minus the additional shipping cost to return the order.

• If the cost to return the shipment is greater than the value of the products, your package will be abandoned and no
  refund will be available.

iHerb time sale by 11 Apr 16 - US$1 vitamin C

Now, through this coming Monday, get a 60-day supply of European-sourced Vitamin C for only $1.00 USD! 
www.iherb.com/CGN-Vitamin-C

Limited to stock on hand. One per customer at this price. Sale ends Monday, April 11, 10 a.m., Pacific Time. 

Promo Code link
http://www.iherb.com/California-Gold-Nutrition-Vitamin-C-Quali-C-1000-mg-60-Veggie-Caps/61864/?rcode=HQT301