My Implants Have Dropped and Separated. Is This my Surgeon's Fault?

This sounds very fair. Gravitational factors beyond a surgeon's control can affect results. Poor skin tone, preexisting sagging, too large of a size, a sloping chest wall, and a patient's non compliance with bra support can result in bottoming out (lateral displacement) or sagging. This can often be predicted ahead of time, based on anatomic factors. My revision policy is the same as your surgeon's. There are outside costs we cannot control, therefore these costs are your financial responsibility. I discuss my complication and revision policy with every patient before performing these elective procedures. If you maintain a good relationship with your doctor, I am sure she will do everything possible to make sure you have a satisfactory result. 

I am sorry to hear about the complications you have experienced. Although frustrating, the complications you have experienced are not necessarily anyone's “fault”. Breast implant displacement can occur despite the procedure being performed correctly.  When it comes to revisionary surgery costs,  policies will vary: charges such as facility and/or anesthesia fees are quite customary (and fair) in most practices.Best wishes for an outcome that you are pleased with long-term.

This is a difficult situtation to assess without a consultation. Surgery is not 100% predictable and I believe your surgeon has offered a reasonable option and willingness to improve your outcome.