Purchasing a full-sized commercial double-decker or single-decker transit bus for operations in Hong Kong involves substantial capital investment, with brand-new specialized vehicles costing several million Hong Kong dollars depending on whether they feature advanced diesel, hybrid, or zero-emission electric powertrains. For tourists and visitors utilizing sightseeing services like Big Bus Tours, ticket prices for hop-on hop-stop passes range from approximately 400 to 600 Hong Kong dollars depending on the chosen ticket tier, duration, and inclusion of supplementary harbor night tours or Peak tram combinations.