That's not a bad deal for the gas generators. Usually they tend to go for more than the diesel versions. With the trailer it's a great deal but that guy is out of his mind towing one of those with a pickup and the trailer is going to need a lot of work before it can be pulled. As it sits you would have to load it on a trailer if you bought it.
That's 4k lbs with no brakes on the trailer, which is illegal here where I live.
As far as the trailer condition, note that all but two of the wheel studs are broken off on the one side.
On your trailer, did you know that you can rotate the lunette eye down so the trailer doesn't nose down so much with a smaller truck? May or may not be an issue depending on the height of the tow rig but I thought I would mention it since I noticed yours is still flipped up.
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