14 listings from 14 dealers nationwide. Prices range from $111,949 to $131,899. Median price is $127,899.
The 2026 Keystone 3900rk is currently available from 14 dealers on Searchshop with 14 active listings. Prices range from $111,949 to $131,899. Median price is $127,899. The 2026 Keystone 3900rk is nearly new, so most examples will still carry meaningful factory or extended warranty coverage.
Asking prices show a moderate spread, typical for this model year — pay attention to mileage and condition when comparing listings.
Inventory is concentrated across Utah, South Carolina, Colorado, so buyers in those regions will find the most local options.
Confirm the original factory warranty is intact and transferable, request the original window sticker, and verify any recall work has been completed at a Keystone dealer.
