Does anyone know a site or company that makes TOP QUALITY Professional costumes?

im not talking about for kids or mascots or anything like that. Im talking about costumes that cost between $400—$1000 and look amazing. like superhero costumes (iron man, batman, etc.) or maybe Halo costumes, but not made of cloth and tshirts. Im having trouble finding real suppliers and i kno they must be out there. thank you very much