How much should I charge (babysitting)?

Violet

So I might have the opportunity to babysit for family that has three kids (ages seven, six, and four!) For context, I’m a seventeen year old girl, I know the kids because they go to the camp that I work at, and I have a quite a lot of experience working with kids of all ages. The family is at least fairly well off because the camp is quite expensive and they are sending three kids there, plus apparently they just moved into a pretty big house. I get along really well with these kids and would be really exited to babysit them, plus they seem exited to have me as a babysitter! If you were me, how much would you charge them? I don’t want it to be a ridiculously high amount ofc cause then I wouldnt be called back but I think i can expect a pretty good rate? Lmk what you think