Only one place does it state that the sale of marijuana is ok and that is described as the primary caregiver can be compensated by the patient. The primary caregiver is the person who is on file with the state. Because marijuana sale is still illegal federaly, they won't talk about the ways to "acquire" it. A patient or caregiver could "acquire" marijuana from a cartel and still be exempt from any crimes because it was legal for them to buy it while the seller could still be charged. So the seller assumes all responsibilty when it comes to patient to patient sales and from the sound of it, only those who have you listed as caregiver can compensate and recieve marijuana from you, legally.