Someone got tricked into the gold package by their pot dealer it sounds like. A burner is just a cheap as chips pre-paid phone. You go to walmart or a gas station, pay with cash, the number gets assigned at activation (not in the store) and you top it up with pre-paid cards. Very difficult to figure out who bought what in those situations.

This person seems to think they have to buy a burner from a shady person in an alley that may or may not be the FBI. It's like if Michael Scott needed a burner phone...