As for Ming's meds, feel free to make them whatever price and availability you want, I figure if it's too hard to keep them up, and you decide you want to change it later that's fine, or if it's too easy you can change it too.  Supply and demand and all.  Regardless, you could have her run out, go nuts, whatever, and I won't have a problem with it, I'll just try and play her true to character.  I work with what I have and what I'm given.  ^.^