If you get BRL to create a up to date demo version to be distributed on disk with it etc it might make sense.
Otherwise you are shooting in the dark ... I would guess there are <= 2000 BM users and many of them won't pay a real amount for books (otherwise each would at least have a 5$ book on basic vector calculus and trigo instead of asking childish questions)
Otherwise you are shooting in the dark ... I would guess there are <= 2000 BM users and many of them won't pay a real amount for books (otherwise each would at least have a 5$ book on basic vector calculus and trigo instead of asking childish questions)