Great, thanks everyone!
So for a deal like the self care, just drop what I normally would charge a couple hundred?
The board did include their feed/hay, but right now the hay and feed prices change weekly, so I think this will work better
Consumable items (buckets wear out after X amount of time, same with feed pans and so forth)
Facility wear and tear
Facility itself (land and buildings aren't free....)
And whatever else you spend $$$ on
Then you can figure out how much you need to charge to cover all the costs associated with keeping a single horse, then add on however much profit you want to make per horse and that is what you need to charge.
I pay a flat rate for my board. It includes a stall, all day turnout, blanketing, fly masks, stall cleaning, shavings for the stall, use of the facilities, needed amenities such as electricity to run my fan, heated water buckets and so on and 2x daily feeding of the hay my BO has and soaked beet pulp. Anything else I need/want, I pay for.
I provide alfalfa and timothy hay for my horse in addition to his grain, supplements and salt/mineral blocks. I pay the same amount as if he was eating her hay since she gives him her hay whenever "extra" hay (when he's stuck inside or it's extra-cold or whatever) is handed out and it also covers the "inconvenience" of her having to provide me with storage space for his hay and doling it out to him.
I wanted specific things in his turnout/stall (extra mats, specific feeders and so on) so I bought and installed them (after okaying it), I also like his turnout dragged more than her normal schedule so I do it myself along with dragging the arena if I'd like it done on a specific day (I like a freshly dragged arena for my lessons).