I had the opportunity to deploy (and use!) a slide at a Lufthansa event, super cool experience but given that just the slide deployment probably cost them over $30k I can’t really see it being a common thing.
Of course just opening an exit door replica you could do for ~free
I think mock slide deployment could be made much cheaper than 30k - e. g. high-volume compressors can be used instead of gas canisters, the materials can be cheaper because there is no weight or temperature requirements, etc.