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Oh, the ad is real. And, the photographs are real. And the man in the photographs is real. The phone number is real too.
But the phone number is not that of the man in the photos, and guy who answers the door will not be either.
I can confirm from personal experience that Fyton is absolutely correct on this one! Saw him yesterday, and while he's a really nice, good-looking guy, he is not the guy in the pictures, and he definitely has limits on what he does. Proceed at your own discretion.