diff --git a/apps/admin/public/assets/locales/en-US/components.json b/apps/admin/public/assets/locales/en-US/components.json
index a55a707..6c26754 100644
--- a/apps/admin/public/assets/locales/en-US/components.json
+++ b/apps/admin/public/assets/locales/en-US/components.json
@@ -63,5 +63,5 @@
     "system": "System",
     "toggle": "Toggle theme"
   },
-  "unlimited": "unlimited"
+  "unlimited": "Unlimited"
 }
diff --git a/apps/admin/public/assets/locales/en-US/product.json b/apps/admin/public/assets/locales/en-US/product.json
index 4f1f0ff..f590049 100644
--- a/apps/admin/public/assets/locales/en-US/product.json
+++ b/apps/admin/public/assets/locales/en-US/product.json
@@ -30,7 +30,6 @@
     "discountPercent": "Discount Percentage",
     "Hour": "Hour",
     "inventory": "Subscription Limit",
-    "inventoryDescription": "Set to -1 for unlimited inventory",
     "unlimitedInventory": "Unlimited (enter -1)",
     "language": "Language",
     "languageDescription": "Leave empty for default without language restriction",
diff --git a/apps/admin/public/assets/locales/zh-CN/product.json b/apps/admin/public/assets/locales/zh-CN/product.json
index 4bf0a04..d8a6e28 100644
--- a/apps/admin/public/assets/locales/zh-CN/product.json
+++ b/apps/admin/public/assets/locales/zh-CN/product.json
@@ -30,7 +30,6 @@
     "discountPercent": "折扣百分比",
     "Hour": "小时",
     "inventory": "订阅库存",
-    "inventoryDescription": "设置为 -1 表示不限制库存",
     "unlimitedInventory": "无限制（输入 -1）",
     "language": "语言",
     "languageDescription": "留空为默认无语言限制",
diff --git a/apps/admin/src/components/display.tsx b/apps/admin/src/components/display.tsx
index d7ec6bf..28181c9 100644
--- a/apps/admin/src/components/display.tsx
+++ b/apps/admin/src/components/display.tsx
@@ -28,7 +28,7 @@ export function Display<T extends number | undefined | null>({
   if (
     ["traffic", "trafficSpeed", "number"].includes(type) &&
     unlimited &&
-    !value
+    (value === 0 || value === null || value === undefined)
   ) {
     return t("unlimited");
   }
@@ -42,7 +42,7 @@ export function Display<T extends number | undefined | null>({
   }
 
   if (type === "number") {
-    return value ? value.toString() : "0";
+    return value !== null && value !== undefined ? value.toString() : "0";
   }
 
   return "0";
diff --git a/apps/admin/src/sections/product/subscribe-form.tsx b/apps/admin/src/sections/product/subscribe-form.tsx
index 495171b..884d45c 100644
--- a/apps/admin/src/sections/product/subscribe-form.tsx
+++ b/apps/admin/src/sections/product/subscribe-form.tsx
@@ -454,9 +454,6 @@ export default function SubscribeForm<T extends Record<string, any>>({
                                 value={field.value}
                               />
                             </FormControl>
-                            <FormDescription>
-                              {t("form.inventoryDescription")}
-                            </FormDescription>
                             <FormMessage />
                           </FormItem>
                         )}
diff --git a/apps/user/src/sections/subscribe/duration-selector.tsx b/apps/user/src/sections/subscribe/duration-selector.tsx
index a90ba58..6ecdb39 100644
--- a/apps/user/src/sections/subscribe/duration-selector.tsx
+++ b/apps/user/src/sections/subscribe/duration-selector.tsx
@@ -78,7 +78,7 @@ const DurationSelector: React.FC<DurationSelectorProps> = ({
         </span>
         {discountPercentage > 0 ? (
           <Badge className="h-6 text-sm" variant="destructive">
-            -{discountPercentage}% {t("discount", "Discount")}
+            -{discountPercentage.toFixed(2)}% {t("discount", "Discount")}
           </Badge>
         ) : (
           <span className="h-6 text-muted-foreground text-sm">--</span>