diff --git a/src/main/java/video/domain/rental/ChildrenPrice.java b/src/main/java/video/domain/rental/ChildrenPrice.java
new file mode 100644
index 0000000..8c8c32a
--- /dev/null
+++ b/src/main/java/video/domain/rental/ChildrenPrice.java
@@ -0,0 +1,11 @@
+package video.domain.rental;
+
+public class ChildrenPrice {
+    public ChildrenPrice() {
+    }
+
+    int price(int daysRented) {
+        if (daysRented <= 3) return 150;
+        return 150 + (daysRented - 3) * 150;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/video/domain/rental/NewReleasePrice.java b/src/main/java/video/domain/rental/NewReleasePrice.java
new file mode 100644
index 0000000..0bc61e3
--- /dev/null
+++ b/src/main/java/video/domain/rental/NewReleasePrice.java
@@ -0,0 +1,10 @@
+package video.domain.rental;
+
+public class NewReleasePrice {
+    public NewReleasePrice() {
+    }
+
+    int price(int daysRented) {
+        return daysRented * 300;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/video/domain/rental/RegularPrice.java b/src/main/java/video/domain/rental/RegularPrice.java
new file mode 100644
index 0000000..dcb05d0
--- /dev/null
+++ b/src/main/java/video/domain/rental/RegularPrice.java
@@ -0,0 +1,11 @@
+package video.domain.rental;
+
+public class RegularPrice {
+    public RegularPrice() {
+    }
+
+    int price(int daysRented) {
+        if (daysRented <= 2) return 200;
+        return 200 + (daysRented - 2) * 150;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/video/domain/rental/Rental.java b/src/main/java/video/domain/rental/Rental.java
index 8e5dbb7..55bf1c6 100644
--- a/src/main/java/video/domain/rental/Rental.java
+++ b/src/main/java/video/domain/rental/Rental.java
@@ -4,6 +4,9 @@
 import video.domain.PriceType;
 
 public class Rental {
+    private final RegularPrice regularPrice = new RegularPrice();
+    private final NewReleasePrice newReleasePrice = new NewReleasePrice();
+    private final ChildrenPrice childrenPrice = new ChildrenPrice();
     private Movie movie;
     private int daysRented;
 
@@ -22,15 +25,14 @@ public Movie getMovie() {
 
     public int amount() {
         // 金額を計算
+        int daysRented = getDaysRented();
         switch (getMovie().getPriceType()) {
             case REGULAR:
-                if (getDaysRented() <= 2) return 200;
-                return 200 + (getDaysRented() - 2) * 150;
+                return regularPrice.price(daysRented);
             case NEW_RELEASE:
-                return getDaysRented() * 300;
+                return newReleasePrice.price(daysRented);
             case CHILDREN:
-                if (getDaysRented() <= 3) return 150;
-                return 150 + (getDaysRented() - 3) * 150;
+                return childrenPrice.price(daysRented);
             default:
                 throw new RuntimeException("ビデオの区分が誤っています");
         }