Are you a member of any professional association? IEEE, AICPA, AMA, ADA, etc? If yes, try getting quotes through their affiliates.
Sometimes it may be worth it to pay the annual dues to join, and get all the goodies you need.
E.g. I renewed my lapsed membership after several years in a professional association, got my membership upped to Senior level, with the help of other members in the local area and fellow employees. Used it, and a competing offer, to get a substantial raise. Now I enjoy reading their technical journals and science articles. I've nominated a co-worker for senior membership.