How safe is doing the tattoo?

The tattoo is done in absolute sterility and only disposable supplies. All equipment is sterilized. Presence in the treatment rooms, only the replacement shoes or shoe covers. After each client in the study included quartz lamp that ensures the sterility of a premise.

How painful to do tattoos?
Аre there temporary tattoos?
How long to heal a tattoo?
How much a tattoo costs?