There are so many factors that would influence the price that are not supplied.
- What are your overheads?
- Do you have employees?
- Is it domestic or commercial? (And if it’s a bit of both, what is the split?)
- Are you a limited company or sole trader?
- How do customers pay? (Cash? Bank transfer? GoCardless?)
- How many man-hours does it take to complete the work each month?
Without that info, it’s impossible to say.