Quote from FrankSlaughtery:
call them directly and ask for a free trial. the price they give you is the price they give you. there is no negotiating. it runs around $1900 per month w/ a 2 year contract payable quarterly.
do NOT try to piggyback on a current bbg user. you will be sued into oblivion. others have brought up this idea here on ET and everyone correctly and immediately shot it down for being stupid and illegal. it specifically states in the user agreement you can't do this. besides they built security into the system to prevent people from doing this (thumbprint).