Just caught wind of this promo at Amiami. They introduced a new shipping method, SAL parcel. And in line with this they are offering 15% off campaign between June 15 ~ 30 for international shipments. The 15% off is a discount given on the selling price at Amiami and not the manufacturer's price.
For instance, if we are already selling an item with 10,000 yen maker-listed price for 8,000 yen (20%off), we will further discount 15% off of the sale price 8,000 yen and the final total becomes 6,800 yen + shipping.
Looking at the pricing however, the SAL Parcel is quite expensive because of the weight brackets. For a starting package weight of not more than 2kg, the cost to ship by this method from Amiami is between 2400 ~ 5000 yen (depending on your location). Guess this is suitable for customers who regularly buy heavy items like diecast toys, etc.
For more info, check out their announcement here.