I think as more guys start collecting them , there will be guys wanting to buy them Just buy what you can and hold onto them. They are not making anymore of them now.
Theres more demand for them in the past 5 years then there was before that. When I bought my picker and tractor, the guy had a hard time giving it away, i bought it for $1700. A few months ago, I sold it, and got $3k for it.