hmmm I just had a leaf through some old Camera magazines from 1980. In the back there are private "classifieds", amongst which I found a OM Zuiko 85mm f/2 for sale for £120.
A quick scan of recent eBay "sold" items (worldwide) for that lens shows the most expensive at around £350, the least expensive about £100.
Using one of the online "inflation calculators", I found that a price of £120 in 1980 equates to the best part of £440 today.
The magazines also featured some nice pictures of flowers, and some of the pro photographers appeared to be over 40 ...