Here are a few description options for a WordPress post_tag titled “費用包含” (Cost Included) in Traditional Chinese, catering to different levels of formality and target audiences:

**Option 1: Concise & Practical (Best for general audience)**

> 說明此文章內涵蓋的費用項目，讓您清楚了解價格包含哪些內容。

* **Translation:** Explains the cost items included in this article, allowing you to clearly understand what the price covers.
* **Good for:** Blog posts related to travel, services, products, etc. where cost transparency is important.

**Option 2: Slightly More Detailed (Good for informative content)**

> 標示文章中已包含在價格內的費用明細，例如交通、住宿、餐飲等，確保您對總費用有清晰的概念。

* **Translation:** Indicates the detailed cost items already included in the price within the article, such as transportation, accommodation, meals, etc., ensuring you have a clear understanding of the total cost.
* **Good for:** More in-depth articles, tutorials, or product comparisons.

**Option 3: Focusing on Benefits (Good for marketing/sales-oriented content)**

> 了解費用包含的內容，享受無後顧之憂的體驗。我們致力於提供透明且詳盡的資訊，讓您輕鬆預算。

* **Translation:** Understand what’s included in the cost and enjoy a worry-free experience. We are committed to providing transparent and detailed information, making budget planning easy for you.
* **Good for:** Promotional content, sales pages, and services where transparency is a key selling point.

**Option 4: Simple and Direct (For simpler scenarios)**

> 清晰表示文章中包含的費用。

* **Translation:** Clearly indicates the costs included in the article.
* **Good for:** Short articles where brevity is key.

**Important Considerations:**

* **Target Audience:** Who are you writing for? (e.g., travelers, customers purchasing a service, etc.) Tailor your language to their level of understanding.
* **Context:** What kind of content is associated with this tag? The description should reflect the nature of the content.
* **Keyword Usage:** Consider if adding more specific keywords (e.g., “機票費用”, “旅行費用”, “服務費用”) within the description would be helpful for SEO (Search Engine Optimization).
* **WordPress Theme:** Some themes might display these descriptions in a specific way.

Ultimately, choose the description that best suits your needs and the context of your posts. You can also adapt any of these descriptions to suit your specific needs.