Hi,
I can't really give you an accurate quote without the indicator in question. Do you think you can send me a copy? Depending on the complexity of the project, I might adjust my rates down. Also, do you have a list of specifications regarding the EA? For eg, does it need to set TP/SL? Does the position size need to be a user defined variable? All that good stuff.
I have over a decade of experience coding trading strategies, and have spent the last 7 years focused on developing with mql4/5 for the metatrader platform. Although relatively new to the site, I am quite qualified to do this job.
Cheers,
Shi Jun