In 1978, KISS tickets were $18. each at the box office here.
The closest I ever experienced to the prices you are talking is the Zappa concert at the Boston Tea Party in 1973, which was a whopping $3.50.
Either you live where concerts are dirt cheap, or you have your years and dollars mixed up.
This was in Miami, years are correct. I’d never even heard of Kiss until I went to school in NC in ‘78.