It wasn't too bad a movie for that time. I remember the best fighter from the Korean side was a "one-eyed Jack" (had a patch covering an eye). And I remembered the first part of his final fight, where he cheated.....he hopped forward and used his rear hand to give a short hook to his opponent's face/eye or something like that.
From my limited knowledge, there are only two ways to get shows:
(1) Get it from the shops (you've tried this already).
(2) Get it from overseas on-line (usually they'll mail it t you).
Since (1) is a dead end to you, you have no other choice but to try (2). If you don't have a credit card, can't you borrow from your parents or relatives or boy/girl-friend or something? If you offer to pay them up front once the order is made on-line, it should be OK right?
Or the guys at the movie forum will know of other ways to get old movies which we aren't aware of. Here's the link to that forum:
http://www.sgforums.com/?action=forum_display&forum_id=1533