Also many require Liability Insurance. It's not expensive but it should be included in your business model.
The insurance amount that was quoted to me was around CAD$650 for a $100,000 liability, around $100 more for $500,000 and $100 more for $1M.
I do not find that inexpensive since my whole photo/video insurance is less than $400 yearly.
That's in Québec, Canada