Where can I get white (p) leather chaps?

I work on my Halloween costume, and try to find white leather or Pleather flared trousers or a guy decent price, money is not a huge problem, but I do not want to spend $ 400 on pants I'll wear a number of times. should not be either mens trousers. crotch / buttless is ok, but not preferred …… sooo any ideas?

eBay, Goodwill, thrift stores, ask friends if they have

MEN’S CHAPS RALPH LAUREN JACKET