请说明如何判断一个电子产品的性价比，并且回答必须包含三个要点，并且用英文作为回答的形式。
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To determine the cost-effectiveness of an electronic product, one should consider the following three key points:

1. **Performance and Features**  
   Evaluate the product's performance in relation to its key features. Compare these aspects with similar products in the market to understand if the product offers better value for its price.

2. **Price**  
   Analyze the product's price in comparison to its quality and functionality. Ensure that the cost is reasonable and aligns with the product's specifications and overall quality.

3. **Durability and Maintenance Costs**  
   Consider the product's expected lifespan and potential maintenance or repair costs. A product with high durability and low long-term costs will generally offer better value over time.
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