The fee is not standard. It varies from different doctors and also depends on your immunization record. If you already had some of vaccines before, you can show doctor your record and you do not have to take these shots.
I will do my medical exam probably soon. I called several places and price I got is from around $160 to more than $500. So I guess I will do mine at $160 place. :-)
So make sure call different places to get the best price and bring all your immunization records with you.