Add-on for Prestashop

I need an add-on or other way to be able to have weight dependant prices in a Prestashop online store. For example my client wants to sell bulk goods like beans, flour, etc. He has the price per Kg and clients should be able to buy any quantity they like. So if the Kg price for Flour is 1€ and if the client orders 100g the final price should be 0,10€.

JavaScript MySQL PHP Prestashop

项目ID： #8232188

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