How much money can a fiction writer expect, on average, for a first book? Assuming he's not a sap. I'm sure you have this somewhere in your FAQ list, but I couldn't find it. (it's not there)
Forget for a moment the speal about how a writer has to "bleed to succeed," and set aside the romantic "writing for the love" angle, and let's talk cashola. Some fella or dame wants to make a living as a fiction writer and has kids to feed and a mortgage to pay. What do blokes like that gotta do, assuming they can pass the Starting Gate and get published?
What sort of money are we talking about? How productive does the writer have to be? One 80k word book per year? Two per year? Twelve?
I know it's more like pricing wine than soda-pop, but even wine has general price RANGES. Like so,
Guy From Mars: "Hey, Earthling, how much does wine cost?"
Earthling: "About fifteen bux. That's for a standard 750ml bottle of table wine. Some is way more, some is way less. Stuff that's way more is probably really good. Stuff that's way less is probably not so great."
If you you want to pay a mortgage and feed the kids, this is the wrong career for you. VERY few writers make a living. Even fewer make a lot of money. Those that do tend to be people who've got backlist that keeps selling for years.
There's a reason a lot of writers have "other" jobs. It's not cause they like flinging suds, or washing duds, or donning scrubs...it's cause they need to earn some dough.
Average advances for fiction run under $10K. If you can live on that, screw writing fiction; write a how-to book.