Baby sitter pay question

Jade • 👪 || 1/4/19 boy mum 🥰 || 👼🏻 8/30/2019

What’s your ideal pay for baby sitting a baby at 2 months for 2 to 1 hour each day? I just need a baby sitter to baby sit my son for 2 to 1 hour and i want to ask my grandma if she can, I’m sure she wouldn’t have a problem with it but I’d like to know how much a day would be good pay for her?