<h1>Product Sale Cost</h1> <h2>Add a product cost that depends on the current stock and the supplier price.</h2> <p>This module adds a new product cost called cost<em>sale, that is evaluated as follow: * if the product is in stock, the cost is equal to the variant cost price; * if the product is not in stock, the price is got from the main supplier. * if the context need a quantity Q of the product and the shock has q1 &lt; Q the cost is: cost</em>sale = (q1 * variant<em>cost</em>price + (Q - q1) * supplier price ) / Q.</p> <p>This new cost_sale can be used in product pricelist as base cost for pricelists.</p>