It didn't cost anything, because there weren't any minicomputers in 1962. IBM released their first mini, the 1130, in 1965, and it cost, according to IBM, $32,280. Obviously that number was picked by an accountant instead of the programmers. Check it out: the 1130 was a 16-bit computer, and the largest 16-bit number is 16,384. A programmer would have chosen $32,768--twice 16,384--as the computer's price.