How do you feel about people/businesses who sell really expensive items and tell you that a portion of the proceeds go to charity? Do you feel that the only reason they're dealing with the charity is to make sales or do you feel there could be some good behind it in some cases? Would you be more inclined to buy what seems to be an overpriced item because some of the money is going to charity? If it's the same item but supposedly 100% or most of the proceeds go to charity would you feel any more inclined to buy it? Would you rather be told an exact percent even if it's really small instead of just "a portion"?