How's it equipped? Makes a big difference in the weight. You will have to get quotes on scrap locally. Really look it over hard especially if you can't drive it and listen to it run, you might pay a premium scrap price for just that, scrap!
It should be a dry clutch machine unless it was converted to oil clutch (look for the dipstick and breather on the right side of the clutch housing near the engine oil dipstick).
Engine should turn over easily by pulling on the fan while pushing on the belt to tighten it. Look it over carefully for cracks in the cooling system unless it is still holding coolant. Common places are behind the injection pump housing and governor and along the bottom of the pony motor cylinders, seems like the left side gets it worse.
Then look at and measure tracks, BOTH sides! Undercarriage can be a real deal breaker.
http://www.crawlerheaven.com/wearlimits.htm
http://www.crawlerheaven.com/tracklinks.htm
D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄