the costs increase when you take on a caregiver role. you can't just sell whats left over, you have to have the meds when they need them. I am sure you understood that, i'm just moving down a path. You also have to have some sort of rotating stock since most people grow tolerances to strains. This brings in to forms of expense 1st veg rooms seperate and expaned for your stable 2nd seed purchases. A new genetic line into your process means you need to be able to run your current operation and germ, raise, veg, clone, flower, and then decide which pheno is your keeper, this is another cost of course, more lights, more fans, and of course more elec.
If your a paid caregiver then your a proffesional and (again I'm sure this isn't new) then you should act like a proffesional, which means hours and hours of reading; the internet forums, grow books, health forums. more time for your schedule. You need a proper drying space, which requires fans and a dehue. you need proper cure which is labor, I haven't figured if labor is something that you add into your balance ledger..
then there is your basic infa, do you own your grow site? do you pay rent or morgage? if morgage then you pay insurance and tax's, of course the grow is part of that, since it takes up square feet of that..
hmm what did I miss? i mean besides the basics, light bulbs every grow, nutrients everygrow, medium.. HELL! how long your flowers go? I know dudes that run 14 weekers, with a 3-4 week veg your looking at 18 weeks of elec costs, nute costs, yada yada the point is I missed a lot.. :/
My partner says i shouldn't make these statements, "let them learn the hard way, its the best school" but my heads soft from a long day and good vodka. I say that as a poor segway to say this, you got good intentions, I feel that, but your not doing the math right. Top shelve meds arent just love and good intentions brotha, its time and money, both have a cost.. time usually more than money.. and knowledge don't forget knowledge.. and most self made millinionaires made it from knowledge based industry, knowledge is super super pricey.. :/