loads of things - immunizations, getting malaria pills in anticipation of a trip away, having a toe dressing done, depression, check up after a healed broken leg, removal of stitches etc
as for the money thing, where do you think it goes? The doctor is using their time to provide you a service, so therefore you pay them. You would expect anyone else to get paid for providing you with a srvice. They dont have enough time during their surgery time to sign loads of forms so they are doing it in their own time. if you are ill then the service is free. For add ons that arent nessacary for health they charge a fee (and why not?)