Yeah,
the feedback on ebay is really useless to a point. Most sellers will not leave feedback until you leave them feedback. Leave negative feedback and they will do the same even though it is not warrented.
I had the same thing happen to me, bought a razor that the seller went out of his way to hid the damage in the pic's and described it as being in great shape.
No more e-bay razors for me.
Live and learn.