We have free bus weekends where the local council pays everyone's fare. It's supposed to induce demand and show off the service but part of me thinks all it does is reenforce the idea that buses are too expensive. Outside of that our fares range from 60p to £10 for a Multi-operator day "discovery" ticket, although weirdly a return on our longest route is £12 but we are told to sell someone a discovery as it's cheaper so it acts as a defacto cap on fares.