[Question] What are normal watch service prices?

Hey fellow watchnerds! A little while ago I got into watchmaking as a hobby. After investing a lot of time and money in tools etc. I can now confidently say that I can service a watch movement. Last weekend a friend of my brother who is also a watch guy said that i should start servicing others people’s watches. He has a lot of friends who are seeking for a watchmaker but it is often too expensive and too much trouble. So my question is should I start servicing other people’s watches and what should I ask for it? Also, how much more should I ask if a watch has complications or needs a polish. I don’t want to be expensive but it is nice to earn some money. I would love to hear your thoughts and opinions! Thanks in advance!