Old Dominion Freight. If your buyer can pick up at a depot and you drop off at a depot. Will be pretty reasonable. They have around 200 depots across the US.
Have it in a plywood crate.
LTL Freight Shipping & Logistics Services | ODFL
Get freight shipping services from Old Dominion Freight Line (OD), a leading Less-than-Truckload (LTL) carrier for national, expedited, and global freight.www.odfl.com
I've have done that many times in the past . I also have drop off services anywhere between here and New York ! Met quite a few members here on the road .You're retired Dave. Just drive it to the buyer.