That's going to depend on whether they think they have to open it up to work, then fold it back to put it away for the winter.
Last year my local deater's winterization "special" was $90, but that was for a travel trailer or motorhome with winterization kit installed, and it would go higher if extra work was needed.
That's small city Oklahoma, labor rates go up in larger cities where higher land values push up rents, property taxes, and competitve wages.
P.S. just got an offer in the mail, $59.95, up to to gallons antifreeze. That would be putting the job at about 20-30 minutes labor.
