Also worth noting... the bigger venues take a huge cut on merch. Very bad practice IMO. A couple of weeks ago at John Cooper Clarke gig at City Hall in Sheffield, one of the supports announced - really sorry had to increase the price of the book slightly, as City Hall are taking 25%, which leaves around a quid for me at the regular price.
I know some in the industry have been trying to end this practice, and most small venues don't take a cut, but could the big guys at least not end it now for support acts, as a minimum.