Number of Hours
2020 - 2003 = 17 years old
2800 hours / 17 yr = 165 hours per year
165 hrs per year / 365 days
Used an average of around a 1/2 hour per day.
NADA publishes Kubota RTV values from 2020 to 2015.
Kelley Blue Book also publishes values, under their section for Utility Vehicles, but their prices end at 2004.
We recommend reviewing comparable sales on websites that sell the used Kubota RTV900.
With an evaluation of these sales plus the 2004 blue book values - including an assessment of the maintenance and condition of your RTV - a rough estimate should be attainable.
Here are directions using KBB for the 2004 Kubota RTV900:
Kelley Blue Book
Go to [www.kbb.com]
Select = [Motorcycles]
Select = [Utility Vehicle]
Select Make = [Kubota]
Select Year = 
Select Model = [RTV900 4x4 Diesel]
[Select a Value]
Typical Listing Price = $5150
Trade In Value = $3540