8 listings from 7 dealers nationwide. Prices range from $67,399 to $74,899. Median price is $70,999.
The 2026 Keystone 3900dbl is currently available from 7 dealers on Searchshop with 8 active listings. Prices range from $67,399 to $74,899. Median price is $70,999. The 2026 Keystone 3900dbl is nearly new, so most examples will still carry meaningful factory or extended warranty coverage.
Asking prices are tightly clustered, suggesting a stable resale market — there is little room to negotiate based on comparables alone.
Inventory is concentrated across Tennessee, New York, Virginia, 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.
