Bidding on Saturday morning was up to $355 for the four-drawer unit; 12 people had put in bids.
According to the ad, the fridge has been used but is in "good condition." Though it may have some "signs of cosmetic wear," it is "fully operational and functions as intended."
Potential buyers have to be willing to remove the fridge themselves from the Manhattan Psychiatric Center.
Office of General Services spokeswoman Heather Groll says the agency does get unusual surplus items to sell from time to time, including barber chairs from prisons and police cars, but she doesn't recall a previous sale of a morgue cooler.
The auction runs through June 6.