Reply to STEPHEN:
For me the #1 question is how are you going to load it. If he is going to pick it up with a track hoe & sit it on your trailer, well that goes a long way. If you have to spend all day busting your rear, then take that into the price. 2nd question is does it have parts you need, or are you going to fix it? If you get the parts you need, sell some more on here, and scrap the rest, then you could stand to give more if need be. If you want to fix it, better get it for free or find one in better condition. Any D4 less than $1000. needs to be bought, any D2 less than $750 needs to be bought.
The D2 and D4 are not rare machines so don't go offering big money, in fact one of our ACMOC Directors in California scrapped 4 in the past year off to China, and I think two of those were runners, so I'm with Stephen on this, $500 - $750 for running D2's with working motors and steering clutches are a good buy, $750 - $1,000 is a fair price for a working D4 that has no major issues, because you can very easily spend 200 hours and $5,000 fixing both a stuck D2 and D4, and still only have a tractor worth $1,500. Keep your clip in your back pocket unless a good old Cat Mechanic tells you to buy her if she has brand new undercarriage under her for example, or fully rebuilt motors with receipts from the reputable workshop who did the work, because these old Cats are devils to move when they are rusted solid, you need a lift both ends, unless of course the owner says something like "the first $250 I see, she's yours, just git her off the ranch for me", then I'm sure you will get her moved somehow, provided its not 1,000 miles!.😆
From my experience, every seller already has the price set in their mind, so I never make a offer first, I ask them "what's the best price you would take for this tractor", that way you don't shoot yourself in the foot going in high, and if it is close to your budget and you really like the tractor, then negotiate. I was told once we all pay waaay too much for our first antique Cat., but by the time we have bought our 4th or 5th old Cat. we are paying more realistic prices, and that's pretty true.
regards
Mike