Okay, let’s tackle this. So Brian Courtney has 5+ years of experience as a teacher, which is a relatively short tenure in the education sector. However, considering his degree in Religious Education with History from Dublin City University, a reputable institution, and his current role at Dublin and Dun Laoghaire ETB (DDLETB), a large educational authority, I'll estimate his hourly rate to be on the lower side. Typically, teachers with similar experience and qualifications can charge between $30-$75 per hour, depending on the location and industry demand. Given the Irish context, I'll round down to $45 per hour, which is a reasonable estimate for a teacher with Brian's background and experience.