If you want their feather's to look as pretty, white, and flowy as they are always pictured you have to clean them constantly. It does cost more for feed because since they are larger than the average horse they need more. I don't know about shoes because I've never had to buy them but I assume the bigger the shoe the more it cost it also varies on the type of shoes you want. Basically everything is bigger with them and normally when something is bigger(horse wise) the things the horse needs are more expensive than the average sized horse stuff. All of the Clydesdales I've met have been really sweet but like any horse they don't just come like that they need to be taught manners.
~ Hope is never light years away ~