Well I've had a response, he's apologised, but still claims that he's serviced it and bled it before sending and has asked if I can be sure that the fluid loss wasn't just from the reservoir breather hole. Packaging was soaked in fluid and the caliper wouldn't bleed when I tried it as it was. The missing bolt caused the o-ring between the two halves of the caliper to leak.
Josh, the near identical brake I bought from you back in the summer was posted by you in the same manner (no tape over the breather) and had I not needed to shorten the hose it would not have needed any work before fitting. It was a bolt on proposition, just as it should be!
I've bought a mini lever and caliper and lever from another RB member in the past too and that arrived dry and with a firm lever action.
I've replied anyway, pointing this out. See what he says.
I'm not sure I'll be going with negative feedback though. He seems honest enough, just a bit clueless?