Pretty much what these guys have said - when I've put on shows (in the UK, so you may have to translate the financial side of this) for a signed band on an indie label, the top fee we've ever been able to pay them is £150. When I'm doing local shows, it's more a case of getting the band recognised and ensuring that they have an audience who may come back and pay more to see them - the exposure counts for more than the fee - and for local acts, (even relatively well known names), £50 is pretty much the going rate - anything else the gig makes in profit goes back into getting beer/wine/food for the artists, printing up posters, door staff and transport.
Basically, gigging is not a high-profit venture. Even when The Killers played some of their earlier gigs (when they were getting huge and selling out pretty big venues) their fee was £400 - most of this would have gone on transport/accomodation and other expenses - it wasn't until they had millions of record sales behind them that they upped their fee to £10,000, but at that stage, most of that will be swallowed by a recording contract/management anyway.
It's a terrible thing to say, but if you're looking to make money out of music early on, session musician work/covers/private functions is the easiest way to do it - the only problem with these options is that it generally cripples all creative intention.
The best advice I can give is to ask for a reasonable fee - nothing too extortionate - that way, the promoters are more likely to book you again, and if you can pull a crowd (promote the hell out of it, bribe friends, anything) they may ask you back and increase what they pay you. Just bear in mind that a lot of promoters lose money on these nights too and don't have a huge amount of financial backing behind them. Getting a second job, offering to do door work/flyering/cloakroom work will probably get faster financial reward.
If you want to get into DJing, though...
