Not sure how this comparison helps. Gangs are only on walkman.land, and some information needs to be validated. What was 27000 Yen in 1983 in US Dollars? The WM-20 was a direct successor and improvement of the WM-10, so I can not have been more expensive. If I recall correctly, the WM-800 (dual tape Walkman), retailed for $150 in 1985.
