The Gulfstream G400 presents a unique scenario in the business aviation market, encapsulating both a historical model and a recently reintroduced version. Initially produced from 2002 to 2006, the early version of the G400 saw limited sales, leading to its phase-out. However, the model was reintroduced in 2021 with substantial enhancements, significantly outperforming its predecessor in terms of range, speed, and cabin technology. Currently, the market availability for the G400 is quite limited with only three aircraft for sale, making up 10% of the remaining fleet from the initial production run. These aircraft are listed at an average price of $7,495,000, which is a fraction of the $34,000,000 price tag for a new model, reflecting considerable depreciation. The pricing spectrum for these available jets ranges from $7,000,000 to $9,000,000, and with monthly payments estimated at around $36,000, the G400 represents an intriguing option for buyers interested in a large-cabin jet. This market dynamic is particularly compelling for those considering the vastly improved new model, offering cutting-edge advancements at a premium, yet justified, cost.