I have a good client that has asked me to come and clean all his mounts in two trophy rooms ... I have done most all of the mount over a period of the past 25 years ... Probley around 100 mounts from all over african, North American, newzealand ...HOW SHOULD I CHARGE FOR THIS WORK by the piece or by the hour ? I would do the work on site and have a couple helpers .. I would also be taking all the tools I would need to his place to do the work.. . This guy is a multi millionaire so money is no object but I want to be fair , he is hosting some kind of event for one of the republican presidential candidates J.B . next month and said he wants his trophy room prefect.