more simple an concise example of AbstractFactory

Creational/AbstractFactory/ShippableProduct.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace DesignPatterns\Creational\AbstractFactory;
+
+class ShippableProduct implements Product
+{
+    /**
+     * @var float
+     */
+    private $productPrice;
+
+    /**
+     * @var float
+     */
+    private $shippingCosts;
+
+    public function __construct(int $productPrice, int $shippingCosts)
+    {
+        $this->productPrice = $productPrice;
+        $this->shippingCosts = $shippingCosts;
+    }
+
+    public function calculatePrice(): int
+    {
+        return $this->productPrice + $this->shippingCosts;
+    }
+}