Costs for everything are dependent on what you want, who you go to, where, etc. You might want more or less done than someone else. Like "FFS" isn't one procedure, there are lots of things that can be done to feminize the face, and plenty of people don't pursue any of it. You won't have to do everything all at once, although if you can combine similar procedures that will save a bit, and there are loans.
There are also hidden costs you might not consider, like being out of work for a couple weeks (or more), post-procedure care (or travel expenses for a friend/family member), transportation, hotel stay, etc.