Ching, i agreed with u, well may be i over reacted, but he did PM 6 times a day asking a similar questions... you know the worst thing is he started under price my item, and i told him that the offer from him was way off my target selling price, and then he came back to me with another offer but 分期付款 and at the same time he would like to take the M4 away after the first payment...
as i mention before, i dun mind dealing with him at all even with 2 payment but if my M4 was out of his budget, may be he should consider other options out there the first place