DVD?
Doesn't seem like this would be all that difficult to slap on a DVD. It might even sell a few copies if it was featured near Mutant Ninja Turtle stuff. It ain't half bad.
Note: imdb.com is using the wrong cover shot. That's an A&E special about something else.
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EDIT: Just learned at hometheaterforum.com that it's available. It's included in the 50 movie pack Martial Arts from Mill Creek. They changed the title to Karate Kids USA.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1367764
That's the movie list. But's available much cheaper other places. About $16.