public function calculateGLSShippingPrice(float $totalWeight): float 	{ 		$deliveryPrice = 0;  		switch (true) { 			case $totalWeight <= 2: 				$deliveryPrice = $this->price_2kg;  				break;  			case $totalWeight <= 3: 				$deliveryPrice = $this->price_3kg;  				break;  			case $totalWeight <= 5: 				$deliveryPrice = $this->price_5kg;  				break;  			case $totalWeight <= 10: 				$deliveryPrice = $this->price_10kg;  				break;  			case $totalWeight <= 15: 				$deliveryPrice = $this->price_15kg;  				break;  			case $totalWeight <= 20: 				$deliveryPrice = $this->price_20kg;  				break;  			case $totalWeight <= 25: 				$deliveryPrice = $this->price_25kg;  				break;  			case $totalWeight <= 30: 				$deliveryPrice = $this->price_30kg;  				break;  			case $totalWeight <= 40: 				$deliveryPrice = $this->price_40kg;  				break; 		}  		return $deliveryPrice * 1.25; 	}