How much will a revision cost from the same dr?

Obviously, each doctor has his/her own protocol for handling returning patients or patients with problems/complications.  It would be impossible to tell you what your doctor might charge.  Most doctors will offer a discount on their fees for such patients, however.  You will need to contact your plastic surgeon to get a price.  The insertion of material such as mesh may greatly increase the cost.  That stuff is expensive.  I generally find that I can correct bottoming out issues without the insertion of foreign materials.

I'm sorry to hear about the complication you are experiencing. Policy regarding coverage of expenses for revisionary surgery will vary from office to office and probably on a case-by-case basis as well. Of course, much of the financial considerations will depend on exactly what operation is necessary; generally the longer the duration of surgery, the greater the expenses. Costs that may be considered are that of surgery facility, anesthesiologist, new breast implants,  additional material such as acellular dermal matrix/mesh etc.

Generally speaking, costs of revisionary surgery may range from zero, to anesthesia/surgery center fees, to discounted surgeon's fees. I hope this, and the attached link (dedicated to bottoming out surgery correction) helps. Best wishes.