Few pictures or info but looks ok. Price tends to make me think some issues.
https://grandisland.craigslist.org/cto/d/ord-1971-mercury-cougar/6832213265.html
Rural Nebraska, low demand area, might be what the owner thinks is the going rate. Doubt they have much regional comparable data, and might not want to deal with broader market.
Does look decent in the pix.