How much a second-hand portable 35 m.m. projector costed in the '80's?

[maxhifi]

Originally Posted by WISCOJIM

The theaters I worked in in the early 1970's had already done away with that primitive technology, just as we did with the carbon arc light source. By 1973 all our theaters had switched to single projector automated systems with the 5 or 6 reels all spliced together on a single platter. They were operated by the ushers and doorman, no dedicated "projectionist" was needed.

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Fair enough, but in a theatre where you plan to show each film only once, and then switch to another movie, setting up a platter would be very time consuming.