I've been thinking and researching about this for weeks now. I went through some similar posts like How much should an amateur charge for a portrait session? or How do you determine how much to ask for when someone wants you to photograph a wedding? or How should I price my first paid event shoot? but I still can't find the answer to this question as it seems to be a bit different from the other ones..
I am about to start shooting photos of groups of mainly school children that are coming to an outdoor training center for several activities such as climbing, canoeing, archery, and a few more. They have several groups coming every week, either for a day visit or a weekend/3day stay. So the work load is unpredictable at this stage as we don't know how interested schools would be in requesting the service.
And given that it's complicated to go through every parent's permission to shoot individual photos of the kids as well as convincing them to pay!, we decided that we send flyers to schools for group photos at a cost of for instance €100 which would make sense for the school as it would be split among 20~40 students and it would be school's responsibility to deal with charging the parents individually.
The problem here is that at the moment the outdoor center is asking for a 30% commission for each of the first two photos and 20% of each photo afterwards.
There are two issues with this:
Going through the sales tax, costs of commuting to the center and back, etc. etc. it leaves me quite little for all the work that I should do. Is there a norm or standard on how much organizations would charge for commission when they provide the opportunity for the photographer to shoot?
I'm not sure if charging them per photo is reasonable or not. I was thinking of maybe providing 2-3 groups photos of the kids while dressed for different activities at the base price, and then ask for extra €10 or so per extra photo they may want to shoot.
But then again, it's not clear to me how to provide the final work. Is it going to be only the digital copy? Is it an average-sized print (e.g. 6x8") which won't cost me much? Or ...?
I would highly appreciate any help with this, as I'm completely lost and don't know how to start.
I would also like to mention that there's almost no competition in this work.