Aluminum doors are often priced higher compared to other types of doors due to several factors:

1. Material Cost: Aluminum is a lightweight metal known for its durability and resistance to corrosion, which contributes to its higher cost compared to other materials such as wood or uPVC.

2. Manufacturing Process: The process of manufacturing aluminum doors involves precision engineering and specialized equipment, which can increase production costs. 

3. Energy Efficiency: High-quality aluminum doors often include features like thermal breaks or insulated frames to improve energy efficiency. These additional components can contribute to the higher overall cost. 

4. Design and Customization: Aluminum doors offer a wide range of design options and customization possibilities, which may involve additional design, engineering, and production costs.

5. Durability and Longevity: Aluminum doors have a long lifespan and require minimal maintenance, making them a cost-effective choice in the long run. The initial higher cost is often justified by the durability and longevity of the product. 

6. Brand Reputation: Some aluminum door brands are well-known for their high quality and superior performance, which can also contribute to a higher price tag based on brand reputation.

While aluminum doors may come with a higher upfront cost, they offer benefits such as longevity, energy efficiency, low maintenance, and aesthetic appeal, which can make them a worthwhile investment in the long term. It's important to consider the overall value, quality, and features of aluminum doors when evaluating their cost.