weightattribute of the SKUs to be shipped). For each tier the main attributes you need to specify are:
up_to— the tier's upper limit (in terms of weight, the
unit_of_weightwill be inherited from the shipping method).
price_amount_cents— the cost that will be charged for the shipping method if the total weight of the shipment is lower than (or equal to) the
nullthe related tier will be considered a beyond tier, meaning that the specified shipping method cost will be charged for all the shipments whose total weight is greater than the maximum tier's upper limit. If no beyond tier is set the shipping method's
price_mount_centswill be used as the beyond price.