Really depends on condition and hours. I have 332 in good condition w/900hrs and wouldn't sell it for $1800, probably not even for $2800. A hydraulic blade alone could could cost $400. If it's in good shape it's a steal at that price assuming it has a mower deck.

The JD 332 does have an hourmeter under the hood. So contact the owner and ask what it indicates. My Dad had one for 14 years with the 50 inch deck and a hydraulic rear tine 30 inch tiller with the 12 inch extention to make a 42 inch pass and he traded it in 5 years ago on a JD X495 (diesel) with a 54C deck with the Mulch Kit installed and the cool yellow hubcaps! He received a discount of about $1,000 off of the list of the X495 package and $2,000 as trade-in value for his 332 package. I am unsure as to how many hours he had on his 332, but I think it was about 2,000. But everything worked fine and was in relatively good shape for its age. He never had a bit of trouble with it. In fact, I am sure he never had to buy one part for it, the deck, or the tiller except for regular maintenance items. Good luck...