A BAD Prop. Trader can make ZERO if he doesn't have a base salary. If he does, then it is probably (give or take) 25K a year.
An AVERAGE Prop. Trader, someone like myself, can expect somewhere 50-100K (this is only doable if you don't have a base salary but a high pay out).
An GOOD Prop. Trader, and I don't use the word GOOD lightly, can make 100K and beyond, first year. There is a woman next to me who is up at least 1/4 million, she is on her first year without previous trading experience, EXCEPTIONAL.
None of the above numbers mean ANYTHING, you will do as well as you can do, it won't have anything to do with any statistical figures.
After you go through your first year, if you are still profitable, then it is time to EXPECT, until then, focus on survival, forget the numbers. At least half of the traders who ever walked into my firm will walk out after they blew a year or so's worth of time for NOTHING, my firm will NEVER fire anyone who show up to play every day, they just quit because trading is not for them.
Which half of the fence will I be on? I honestly don't know yet. You don't know either, until you do it . . .
If you are asking this kind of questions at all, go for a prop. firm that requires no money on the line, if you blow up at least it won't be your own money, and you will have as good a chance as anyone starting out in this business to make it, just remember, it is still a 50/50 at best, and this is regardless of your work ethic (there are people who work as hard as anyone in any business but they simply can not make any money).