I would be real surprised if you could even trade both for the JD 567. It is a much more valuable baler than the Vermeer 605M. Plus yours must have a lot of bales through it to have needed all new belts.
The features in the monitor make a big different too. The JD monitor lets you do a lot of different thing right from the cab. The Vermeer monitor does not.
I just looked at book value the JD has a $10,000 higher loan value than the Vermeer. That an it really depends on where you live if the Vermeer has much of a resale. Here around Dubuque you have a real hard time selling Vermeer balers. If you do get one sold you will have to have been real cheap.