Usage scenarios dictate the structural requirements and price points. For maritime and aviation applications, toilets must be lightweight and corrosion-resistant, requiring marine-grade certifications, which increases costs. In high-traffic public facilities or portable restroom trailers, durability and ease of maintenance are prioritized, often leading to the selection of stainless steel units that have a higher upfront cost but lower long-term TCO (Total Cost of Ownership) due to reduced breakage.