You can get a traditional tow truck to unload it. I haven’t done it this way myself.
Renting a gantry would probably cost as much than renting the forklift. Last time I rented a gantry, it was 800$ just for the gantry at Lifting Gear Hire. That didn’t take into account trolleys, chain falls or straps. Looks like Sunbelt might be a little cheaper if you go by the day for rental.
What I would recommend if you dont want to do the tow truck is have it delivered to a terminal. Then rent a drop deck trailer & pallet jack, pick the machine up from the terminal in the trailer. They will likely load it onto your drop deck trailer for nothing. You can then take the trailer to your house & unload it with the pallet jack of the drop deck trailer pretty easily.
Another option is if you have a friend with a heavy capacity skid steer/tractor. I unloaded a couple of mine that way. Kubota SVL75 was the skid steer size we used with forks on it.
More than one way to skin a cat as they would say.