$100 per song and an additional $150 to mix and "master" (make loud lol) the entire project. Luckily most of the bands i record are high school kids so they can't spend 80 hours a day in the studio cuz then mommy starts calling (not hating, we've all been there but it's pretty funny when we have to stop tracking for their guitar player to answer the phone and go "God dad, i told you i'm at a recording studio. I don't know when i'm gonna be done....ok I'll have the car back by 11") The bands I do that aren't in high school usually have their shit together a bit more so they get in and get out.
I had one nightmare experience though, a bunch of 29 year old losers (no jobs, no lives, lame music, no amps, sabian B8 cymbal pack) who were the absolute worst "musicians" anyone can concieve... charged them $750 for a 6 song demo and the diva ass singer wanted to keep coming back and back and back to redo the same terrible whining parts over untill finally i flipped the fuck out on them and said either show up with another $350 next time or don't show up at all. Haven't seen them since and I couldn't be happier lol.