Don't you just hate that "one wheel nut"-"one chassis tube " crap.
I wouldn't buy anything from any such ad on principle.
Any straight honest seller just tells you the price .I nearly booked a holiday online recently.It seemed good value til I got to the paying bit . "do you want to take any luggage" then proceeded to tell me how much they would rip me off to take a suitcase. I couldn't get the little arrow to the little red cross fast enough.