Our wedding officiant is not affiliated with any specific church and we came into contact with him through a mutual friend. He doesn't charge a fee to perform a wedding ceremony, but he does ask the couple to donate to a memorial scholarship fund in memory of his late son. He said we should give, "Whatever amount you feel comfortable with." What do you think is a good amount? I want to make sure we are giving the right amount and not being cheap. What would E do?