Why do Nile cruise prices differ despite having similar programs?

Nile cruise prices vary due to differences in the quality and renovation date of the ship, the level of hotel service provided, room details, in addition to timing, and what the package includes (like sightseeing spots and hidden fees), even though the trip path may look identical on paper.
Details of price difference reasons

• Age of the ship and renovation date: A modern-built ship or a completely renovated offer higher prices compared to old, worn-out ships that suffer from issues in the engine or central air conditioning, even if they have the same star rating.
• Service level: There is a huge difference between large commercial ships that rely on quantity and Boutique ships and the luxury sailing boats (Dahabiya) that offer dedicated crew members, premium hospitality, and attention to the smallest detail.
• Cabin size and location: Standard rooms that have small windows are completely different in price from the luxury suites or the cabins that are equipped with French panoramic windows that directly overlook the Nile.
• Docking and sailing location: Docking costs in private marinas close to temples and city centers differ from ships that dock in remote areas or in back rows requiring crossing multiple ships to reach the beach.
• Tourist season: The prices noticeably rise during peak times (like Christmas, New Year, and Easter) compared to the quiet summer seasons that witness large discounts.
• What does the price include (Inclusions) on the Nile Cruise: Some offers appear cheap because they exclude sightseeing entry tickets (whose prices recently increased), the cost of a private tour guide, tips, and drinks, while the more expensive offers provide all-inclusive packages.