Babysitting is expensive as fawk in my region. Bare minimum $10 per hour plus tip. More standard is $15-20 per hour plus tip. No chores outside of childcare. Chores = a different job (mother's helper if I'm on site, maid if I'm not).
Childcare is similarly priced ($1500 a month for before & after school care, $2500 a month for infant/toddler full time care).
Prices vary hugely by region. In the US $10 an hour is fairly average. Some places are as low as $2 an hour, some as high as $25. YMCA subsidized half day in my region (4 hours) is $50, full day is $100 (9 hours), before & after school care is $1000 per month... In others it's less than half that!
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I used childcare more than babysitting per se. What I personally did was hire Early Childhood Education / Med-Students / Psych students though my university to come over at night after my son was already in bed. $20 + home cooked meal + quiet place to study = a screaming deal for me at $40-$100 a week instead of $500 a week, depending on whether I needed 2 days or 5... And they got food, a little beer money, & a quiet place to study. Win/win. I usually had a "stable" of them, with a few regulars. Everyone's schedule shifts each quarter. That's how I worked (nights) & went to college. I'd use the same pool of college kids for any daytime babysitting needs in event of an emergency, but then I'd pay them the going min rate of $10 an hour plus tip.
Non-emergencies I tended to trade play dates with other parents, use parents-night-out at our local gymnastics place, homeschool teens, other people's nannies & au pairs who wanted some moonlighting pay, etc... But my son is super super social. Babysitters worked best for when I needed care while he was sleeping, when he was awake I tended to take him to group type activities.
The only caveat to all of the above is when he was sick I used a home nursing care service. Ironically, CNAs only make about $9 an hour in my region. It's cheaper to have skilled nursing care than a highschool kid!!! In fact, I hooked a few of my favorite Russians up with nannying gigs... With their medical background they were able to more than triple their CNA salary to $3500 a month, plus a nanny-car, plus paid vacations, & all the other perks families do to keep good nannies... All while working on their American healthcare certs.
& No. I would never leave him with someone he didn't like.