if you do decide to go ahead and hire a live out helper, your costs will be substantially higher, as you will also be responsible for paying for your helpers lodgings. it does get quite expensive, even if your helper is sharing a room with a friend.
On top of minimum wage, it's common to pay 1500+ depending on their accommodation circumstances (boarding house, living with family etc). Food money could be on top or come out of the family shopping bill as normal.