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As I said, I think he envisages a low-tax, deregulated economy and that's not possible in the EU or with any close relationship with the EU. Hence him cozying up to Trump. He just wants free reign for business to do what it likes.
I don't think he particularly needs the money that he gets from the EU (it's ~£72k isn't it?), reckon he could earn more lobbying in the US or something like that.
Pretty much just speculation though, we're never going to know what he really wants.
I personally don't think Farage cares about the publicity that much. I think he was convinced we were going to get No Deal, which he prefers above all else, and thinks if a deal passes we're going to end up with a close relationship with the EU and no chance of a terrible standards-reducing US trade deal and US-style deregulated economy.