How much is a transmission flush?

i don't think i would flush it.is the fluid dark looking or red?usually on the honda/acura,you just drain,fill,drive.drain,fill,drive.drain fill,and drive.on the 3rd time,don't drain,and hope it works,better.but research your problem,and i'm sure others will chime in on this.it has a filter,but,you have to disassemble tranny,to change it!