Not sure what you are asking. PTO only charges $325 for a trademark filing, for one interntional class, $375 for paper filing, and $275 if you can use the exact same description in the ID manual (TEAS plus). I normally would not use TEAS plus and prefer to write my own description of goods and services.
If you want to file under many classes, the fee could be unlimited.
At certain time after the registration, you must pay maintainence fees but these are nominal.
If you are talking about attorney fees, it can range from a few hundred dollars to a few thousands. Try to find someone who charges flat fee, including response to office actions.
