It needs to be evaluated first.
Various investigations to confirm the diagnosis of gynaecomastia (if not done previously), and base line investigations (needed before any surgical procedure).
Once fittness for surgery recieved, surgery for gynaecomastia can be done @ ~20 to 25k.
Next Steps
USG B/L chest with axilla,
FNAC
all routine blood workup
Health Tips
mention if you had testicular trauma, or if you are heavy drinking habit.