I have 2 kids but often have a college aged sitter just pick up one kids from school and take him to his activities. The going rate for one kid is $20-25/hour but I have never paid more than $22/hr for one and $25 for both.
If they are babysitting at night I usually pay for an Uber home after 10pm unless they live really close. I never pay for transportation to work though, that’s on them.