Commerce Shipping extra weight rate

Commerce shipping extra weight formula considers only base charge if order weight is lower or equal to minimum weight. It applies extra weight rate for any excess weight above minimum. Some greek shipping companies use this model of charging (i.e. ACS).

For example lets say we set these:
Base rate 5 euro
Minimum weight 3 kg
Extra weight rate 1 euro

If order is below minimum weight (3 kg) shipping will cost 5 euro
If order is 5 kg shipping will cost 5 euro + (5 kg - 2 kg) x 1 = 7 euro

Requirements

Drupal Commerce 2.x - https://www.drupal.org/project/commerce
Commerce Shipping 2.x - https://www.drupal.org/project/commerce_shipping
Physical fields - https://www.drupal.org/project/physical

Similar modules

https://dgo.to/commerce_shipping_weight_tariff module differs in that the charges are calculated in steps always considering higher weight to calculate shipping charges meanwhile in this module the rate is calculated based on the formula given above.

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