sGetPricegroupDiscount example

// Updated / Fixed 28.10.2008 - STH         if (!empty($usepricegroups)) {
            $listPrice = null;
            $foundPrice = null;

            if (!empty($cheapestPrice)) {
                $listPrice = $cheapestPrice;
            } else {
                $foundPrice = true;
            }

            $returnPrice = $this->sGetPricegroupDiscount(
                $this->sSYSTEM->sUSERGROUP,
                $pricegroup,
                $listPrice,
                99999,
                false
            );

            if (!empty($returnPrice) && $foundPrice) {
                $cheapestPrice = $returnPrice;
            } elseif ($foundPrice !== null && $returnPrice === 0.) {
                $cheapestPrice = '0.00';
            }

// Recalculate price per item, if purchase unit is set         if ($queryAdditionalInfo['purchaseunit'] != 0) {
            $grossPrice /= $queryAdditionalInfo['purchaseunit'];
            $netPrice /= $queryAdditionalInfo['purchaseunit'];
        }

        if (empty($this->sSYSTEM->sCurrency['factor'])) {
            $this->sSYSTEM->sCurrency['factor'] = 1;
        }

        if ($queryAdditionalInfo['pricegroupActive']) {
            $grossPrice = $this->moduleManager->Articles()->sGetPricegroupDiscount(
                $this->sSYSTEM->sUSERGROUP,
                $queryAdditionalInfo['pricegroupID'],
                $grossPrice,
                $quantity,
                false
            );
            $grossPrice = $this->moduleManager->Articles()->sRound($grossPrice);
            if (($this->config->get('sARTICLESOUTPUTNETTO') && !$this->sSYSTEM->sUSERGROUPDATA['tax'])
                || (!$this->sSYSTEM->sUSERGROUPDATA['tax'] && $this->sSYSTEM->sUSERGROUPDATA['id'])
            ) {
                $netPrice = $this->moduleManager->Articles()->sRound(