Maybe not so much a bargain. The first one looks like an enlarged modern print of a booklet or leaflet front page than a poster.
Currently there are repros of posters being sold online which may be passed off knowingly or unknowingly as originals, buyer beware. The only way one can tell is by close inspection by someone who knows what to look for in terms of paper quality and telling old from modern print methods. Old Imperial poster sizes will differ from modern.