One can adjust the price of saleable entity at product and category page.<\/p>\n\n\n\n
For adjustments, create file etc\/di.xml in your module:<\/p>\n\n\n\n
<type name="Magento\\Framework\\Pricing\\Adjustment\\Collection">\n <arguments>\n <argument name="adjustments" xsi:type="array">\n <item name="price_adjustment" xsi:type="const">VENDOR\\MODULE\\Pricing\\Adjustment::ADJUSTMENT_CODE<\/item>\n <\/argument>\n <\/arguments>\n<\/type>\n<type name="Magento\\Framework\\Pricing\\Adjustment\\Pool">\n <arguments>\n <argument name="adjustments" xsi:type="array">\n <item name="price_adjustment" xsi:type="array">\n <item name="className" xsi:type="string">VENDOR\\MODULE\\Pricing\\Adjustment<\/item>\n <item name="sortOrder" xsi:type="string">10<\/item>\n <\/item>\n <\/argument>\n <\/arguments>\n<\/type><\/pre>\n\n\n\nNow create the Adjustment.php file : VENDOR\\MODULE\\Pricing\\Adjustment.php<\/p>\n\n\n\n
namespace VENDOR\\MODULE\\Pricing;\n\nuse Magento\\Framework\\Pricing\\Adjustment\\AdjustmentInterface;\nuse Magento\\Framework\\Pricing\\SaleableInterface;\n\nclass Adjustment implements AdjustmentInterface\n{\n\n const ADJUSTMENT_CODE = 'price_adjustment';\n const ADJUSTMENT_PRICE = 1.79;\n\n \/**\n * Get adjustment code\n *\n * @return string\n *\/\n public function getAdjustmentCode()\n {\n return self::ADJUSTMENT_CODE;\n }\n\n \/**\n * Define if adjustment is included in base price\n *\n * @return bool\n *\/\n public function isIncludedInBasePrice()\n {\n return true;\n }\n\n \/**\n * Define if adjustment is included in display price\n *\n * @return bool\n *\/\n public function isIncludedInDisplayPrice()\n {\n return true;\n }\n\n \/**\n * Extract adjustment amount from the given amount value\n *\n * @param float $amount\n * @param SaleableInterface $saleableItem\n * @param null|array $context\n * @return float\n *\/\n public function extractAdjustment($amount, SaleableInterface $saleableItem, $context = [])\n {\n return $amount - self::ADJUSTMENT_PRICE;\n }\n\n \/**\n * Apply adjustment amount and return result value\n *\n * @param float $amount\n * @param SaleableInterface $saleableItem\n * @param null|array $context\n * @return float\n *\/\n public function applyAdjustment($amount, SaleableInterface $saleableItem, $context = [])\n {\n return $amount + self::ADJUSTMENT_PRICE;\n }\n\n \/**\n * Check if adjustment should be excluded from calculations along with the given adjustment\n *\n * @param string $adjustmentCode\n * @return bool\n *\/\n public function isExcludedWith($adjustmentCode)\n {\n return $this->getAdjustmentCode() === $adjustmentCode;\n }\n\n \/**\n * Return sort order position\n *\n * @return int\n *\/\n public function getSortOrder()\n {\n return 21;\n }\n}<\/pre>\n\n\n\nFrom the above code one can adjust the price for all the saleable item in the inventory.<\/p>\n\n\n\n