I already own one confirmed "Suicide" gun (Colt Detective Spcl 2" Bbl). The DS had some blue loss and slight pitting from blood spatter not being cleaned off. I had it parkerized to cover the blue loss and pitting. So no, it wouldn't bother me in the least. As far as his bid starting price, that bothers me.
As far as my military issued weaponry: Of my M1's, M1 Carb's, 1911's, 1911A1's, 1917, Victory, P-38's, Mosin Nagant's, SKS's, 98K... I would be willing to bet my bottom dollar that at least one of them has blood on them, although it would be next to impossible to prove.
Class III