In the 1980s, the price of a Royal Enfield motorcycle would have varied depending on the specific model, country, and any import/export duties or taxes imposed at the time. It's important to note that the Royal Enfield company faced financial difficulties in the 1970s, resulting in the closure of their original factory in England. However, production of Royal Enfield motorcycles continued in India under the ownership of Enfield India Ltd.
During the 1980s, Enfield India Ltd. produced the Royal Enfield Bullet 350 and the Royal Enfield Bullet 500. While I don't have the exact price figures from that era, it's worth mentioning that Royal Enfield motorcycles were generally considered premium motorcycles and were known for their durability and classic design.
To get more accurate information about the prices of Royal Enfield motorcycles in the 1980s, it would be helpful to consult historical motorcycle price guides, reach out to vintage motorcycle enthusiasts, or explore motorcycle forums dedicated to Royal Enfield or vintage motorcycles.