Complex sentence: Since starting operations, the normal fares on Cavendish services were set lower than those of their main rival, Eastbourne Buses: initially at an introductory £1 fare, although that was quickly increased to £1.30.
Split into simpler sentences: Since starting operations, the normal fares on Cavendish services have been set lower than those of their main rival, Eastbourne Buses. When Cavendish buses first started running, an introductory £1 fare was used, although that was quickly increased to £1.30.